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Hypostomus krikati, new species Figure 1, Table 1. Hypostomus cf. plecostomus: Soares (2005): 1 –131 (inventory of species) Hypostomus cf. plecostomus: Guimarães et al. (2020a):e20201023 (inventory of species). Hypostomus aff. plecostomus: Guimarães et al. (2020b):32 –51 (inventory of species) Hypostomus aff. plecostomus: Guimarães et al. (2021):1 –54 (inventory of species). Holotype. CICCAA 01731, 209.3 mm SL, Brazil, Maranhão state, Rio Pindaré (Mearim River basin), Bom Jesus das Selvas municipality, Pindaré River, Mearim River basin, 4°23′52.0″S 46°50′33.5″W, 26.Jul. 2014, Guimarães E.C. and Brito P.S. Paratypes. All from Brazil, Maranhão state: CICCAA 06160, 1, 120.1 mm SL.; CICCAA 06161, 1, 177.6 mm SL.; CICCAA 06162, 1, 134.3 mm SL.; collected with holotype.—CICCAA 00459, 1, 116.3 mm SL, Rio Zutiua (Mearim River basin), Santa Inês municipality, 3°43′1.79″S, 45°32′2.98″W; Guimarães E.C. and Brito P.S.; 19 Jan 2014.; 19 Jan 2014.; CICCAA 00462, 3, 103.3– 129.7 mm SL; CICCAA 07109, 1, 99.1 mm SL Rio Zutiua (Mearim River basin), Santa Inês municipality, 3°43′1.79″S, 45°32′2.98″W; Guimarães E.C. and Brito P.S.; 19 Jan 2014.; 10 Oct 2013.; CICCAA 00461, 1, 142.9 mm SL, Igarapé Mineirão (Mearim River basin), Alto Alegre do Pindaré municipality, 3°42′30.23″S, 45°56′20.33″W; Guimarães E.C. and Brito P.S.; 18 Jan 2014.; CICCAA 00467, 1, 107.9 mm SL, Lago do Lírio (Mearim River basin), Alto Alegre do Pindaré municipality, 3°39′12.22″S, 45°46′25.06″W; Guimarães E.C. and Brito P.S.; 18 Jan 2014.; CICCAA 00468, 1, 126.2 mm SL, Igarapé Igarapá (Mearim River basin), Bom Jardim municipality, 3°45′51.31″S, 46° 8′15.45″W; Guimarães E.C. and Brito P.S.; 15 Jan 2014.; CICCAA 00525, 1, 122.8 mm SL.; CICCAA 00526, 2, 110.7–119.0 mm SL, Rio Zutiua (Mearim River basin), Santa Inês municipality, 3°43′1.79″S, 45°32′2.98″W; Guimarães E.C. and Brito P.S.; 10 Out 2013.; CICCAA 00529, 1, 123.0 mm SL, Igarapé do Fausto (Mearim River basin), Alto Alegre do Pindaré municipality, 3°42′50.26″S, 46° 3′29.61″W; Guimarães E.C. and Brito P.S.; Dez 2015.; CICCAA 06159, 1, 204.1 mm SL, Igarapé Jenipapo (Mearim River basin), Alto Alegre do Pindaré municipality, 3°51′20.24″S, 46°11′9.56″W; Guimarães E.C. and Brito P.S.; Out 2013.; CIUEMA 1300, 1, 191.9 mm SL, Igarapé Jenipapo (Mearim River basin), Alto Alegre do Pindaré municipality, 3°51′20.24″S, 46°11′9.56″W; Guimarães E.C. and Brito P.S.; Out 2013.; CIUEMA 1301, 1, 130.1 mm SL, Igarapé Timbira (Mearim River basin), Alto Alegre do Pindaré municipality, 3°41′43.77″S, 45°55′13.80″W; Guimarães E.C. and Brito P.S.; 14 Jan 2014.; UFRJ 11170, 2, 98.9–113.6 mm SL, Rio Zutiua (Mearim River basin), Santa Inês municipality, 3°43′1.79″S, 45°32′2.98″W; Guimarães E.C. and Brito P.S.; 19 Jan 2014. Diagnosis. Hypostomus krikati sp. n. shares with members of the H. plecostomus super-group sensu Jardim de Queiroz (2020) the following characters states: mandible small to intermediate sized, low number of teeth (6–41 combined), teeth with a short crown, completely plated abdominal area, and body and fins with dark blotches or spots. The new species is distinguished from the members of H. cochliodon super-group sensu Armbruster (2003), by having slender villiform bicuspid teeth (vs. robust spoon-shaped teeth—see Armbruster (2003) fig. 1a vs. b and c); from the members of H. auroguttatus super-group sensu Jardim de Queiroz (2020), by having shorter mandible, low number of teeth (18–30), dark blotches over the body and fins, and the abdominal area plated (vs. large size of the mandible, high number of teeth (usually more than 30), pale blotches over the body and fins, and abdominal area often naked or partially naked—see Jardim de Queiroz (2020)); from the members of H. hemiurus super-group sensu Jardim de Queiroz 2020 (H. crassicauda Boeseman, 1968, H. hemiurus (Eigenmann, 1912), H. micromaculatus Boeseman, 1968, and H. saramaccensis Boeseman, 1968) by having roundish dark spots on the body (vs. slightly transverse dark spots in H. crassicauda, H. hemiurus, and H. micromaculatus —see Weber et al. (2012), figs. 8d and 9a,c) and abdomen completely covered by plates (vs. naked abdomen or with few disperse plates in H. saramaccensis —see Boeseman (1968)); from Hypostomus nematopterus by having dorsal-fin spine not extremely elongated, reaching approximately in a vertical line through the anal-fin base (vs. extremely elongated dorsal-fin spine, reaching or extending beyond the caudal-fin base—see Weber et al. (2012), fig. 9d); and from H. velhochico by having body with non-aligned spots (vs. body with horizontally aligned spots—see Zawadzki et al. (2017), figs 1 and 3). Furthermore, the new species differs from the members of Hypostomus plecostomus supergroup except Hypostomus affinis (Steindachner, 1877), H. ancistroides (Ihering 1911), H. argu s (Fowler, 1943), H. borellii (Boulenger, 1897), H. boulengeri (Eigenmann & Kennedy 1903), H. careopinnatus Martins, Marinho, Langeani & Serra, 2012, H. carinatus (Steindachner 1881), H. commersoni Valenciennes 1836, H. corantijni Boeseman 1968, H. delimai Zawadzki, Oliveira & Debona 2013, H. formosae Cardoso, Brancolini, Paracampo, Lizzaralde, Covain & Montoya-Burgos 2016, H. holostictus (Regan, 1913), H. hoplonites Rapp Py-Daniel 1988, H. interruptus (Miranda Ribeiro 1918), H. niceforoi (Fowler 1943), H. nigrolineatus Zawadzki, Carvalho, Birindelli & Azevedo 2016, H. pantherinus Kner 1854, H. paucimaculatus Boeseman 1968, H. plecostomus (Linnaeus 1758), H. piratatu Weber, 1986, H. pusarum (Starks 1913), H. rhantos Armbruster, Tansey & Lujan 2007, H. spiniger (Hensel 1870), H. subcarinatus Castelnau, 1855, H. tapijara Oyakawa, Akama & Zanata, 2005, and H. watwata Hancock 1828 by having strongly-developed odontodes along lateral keels (vs. lacking or moderately developed odontodes); from Hypostomus carinatus, H. delimai, H. hoplonites, H. spiniger, H. pusarum, and H. watwata by the number of plates in contact with the posterior border of the supraoccipital bone (only one shield-shaped fused predorsal plate in H. krikati sp. n. vs. 3–10 plates, combined); from H. affinis, H. ancistroides, H. argus, H. borellii, H. commersoni, H. interruptus, H. subcarinatus and H. tapijara by having 25 to 26 plates at the median lateral series (vs. 27–32, combined); from H. rhantos by having medium spots on body (vs. extremely small spots); from H. nigrolineatus by having a well-developed medial buccal papilla (vs. having a rudimentary papilla); from H. pusarum by having a buccal papilla pointed and smooth (vs. buccal papilla globose and rough); from H. corantijni, H. gymnorhynchus, and H. paucimaculatus by having body with non-aligned and round spots (vs. ellipsoid spots in H. corantijni , H. gymnorhynchus and H. paucimaculatus); from H. pantherinus for having rudimentary crests on the supraoccipital and pterotic-supracleithrum (vs. sharp crests on supraoccipital and pterotic-supracleithrum); from H. careopinnatus by the presence of an adipose-fin (vs. absence); from H. famosae by having pectoral-fin spine with well-developed odontodes (vs. pectoral-fin spine slightly covered with weakly developed odontodes); from H. boulengeri by having well-developed keels reaching a vertical line trough adipose-fin origin (vs. well-developed keels reaching the caudal-fin base); from H. famosae and H. boulengeri by having 13–15 (mode 14) plates between anal and caudal-fin (vs. 11–14, mode 12 in H. formosae, 13–15, mode 13 in H. boulengeri), and 5–7 (mode 6) plates between adipose and caudal-fin (vs. 4–6, mode 5 in H. formosae and H. boulengeri). Furthermore, the new species here described differs from H. niceforoi by having a maximum of 30 teeth in the dentary (vs. more than 60); from H. piratatu by having teeth with short crowns (vs. elongated crowns); from H. holostictus by having dorsal-fin spine short, when depressed, reaching approximately in a vertical line through the anal-fin base (vs. dorsal-fin spine elongated, reaching or extending beyond the adipose-fin base); and from H. plecostomus by lacking an exposed pterygiophore, possessing preanal region naked, covered by skin or by the extension of the plates of the ventral series of some adults (vs. presence of an exposed pterygiophore anterior to anal-fin). Description. Counts and measurements listed in Table 1. Body long with rough plates. Dorsal profile rising convexly at angle of approximately 30º from snout tip to posterior end of supraoccipital process, then at angle around 8º up to dorsal-fin origin, and decreasing gently from that point to end of caudal peduncle, with slightly concave area at last dorsal-fin ray level. Head broad and depressed, dorsally covered with dermal ossifications. Tip of snout naked or covered by plates; some specimens exhibiting intermediate stages, varying in all sizes classes (Fig. 2). Anterior profile of snout rounded in dorsal view. Median longitudinal bulge associated with mesethmoid usually conspicuous from snout tip to transverse line between nares. Eye small (11.2–14.9 % of HL), dorsolaterally placed. Interorbital space straight or slightly convex in frontal view. Pair of weak ridges on dorsal surface of head, each one beginning lateral to naris, passing through upper margin of orbit and finishing on central portion of pterotic-supracleithrum. Supraoccipital bone with well-developed median crest; posterior portion of supraoccipital bone bordered by first predorsal plate. First predorsal plate fused (single plate), shield-like (Fig. 3a). Mouth large. Premaxilla with 15–27 and dentary with 18–30 villiform bicuspid teeth. Teeth medium sized, robust, bicuspid, and curved inward distally; inner cusp with short crown. Tooth crown rounded, possessing externally smaller lateral cusp with approximately similar size to main cusp. Dentary ramus flat, approximately straight. Dentaries meet at obtuse angle (~95° to 112°). Median buccal papilla well developed with anterior portion approximately pointed. Lips well developed. Lower lip reaching or almost reaching horizontal line between gill openings; inner surface covered with numerous small papillae. Maxillary barbel short with free tip. Body covered by five lateral series of plates. Dorsal, mid-dorsal, median and mid-ventral plates series with well-developed keels. Dorsal and mid-dorsal plate series with well-developed keels from first series plate to vertical line through adipose-fin origin; median and mid-ventral plate series with well-developed keels only between the fifth and eighth first series plates. Median series bearing complete lateral line; lateral line with 25 to 26 plates. Midventral series strongly bent to fourth or fifth first plates. Ventral series slightly bent to form flat ventral surface of peduncle region. Preanal region naked, lacking exposed pterygiophore, covered by skin or eventually covered by extension of plates of ventral series in some adults.Abdomen covered with minute platelets in adults, with exception of very small areas around pectoral and pelvic-fin insertions, and at urogenital opening. Dorsal fin II,7; its origin just before vertical line through pelvic-fin insertion; dorsal-fin distal border slightly convex. Pectoral fin I,6, its distal border convex. Pectoral-fin spine slightly curved inward, covered with moderately developed odontodes, more developed on its distal portion, particularly in larger specimens.Tip of adpressed pectoral fin reaching to basal one-third to one-fourth of adpressed pelvic-fin spine. Tip of pectoral-fin spine rounded and with odontodes almost perpendicular to spine (Fig. 5b). Pelvic fin i,5, its distal border straight to slightly convex; its adpressed unbranched ray surpassing anal-fin origin. Adipose fin well-developed and inserted five to six plates after dorsal fin posterior insertion, with membrane extending over three plates of dorsal series. Anal fin i,4, its tip reaching the fifth to sixth plate after its origin. Rays of anal fin progressively increasing in length posteriorly, third branched ray usually longest. Caudal fin i,14,i, its margin falcate, with ventral lobe longer than dorsal. Color in alcohol. Ground color of head and trunk dark reddish-brown, with approximately round dark brown spots, except on ventral and ventral-lateral regions of caudal peduncle, ventral region of head, cleithrum, pectoral and pelvic-fin spines ventral region, and anal region. Dorsal and dorsolateral region of body and head with spots more conspicuous and well developed than abdomen. Spots more numerous especially on head dorsal and dorsolateral region. Spotting pattern with little variation between size classes. Dark spots usually larger and with larger interspaces between spots in species below 120 mm SL. Spots progressively more numerous on head, trunk and fins in specimens above 180 mm SL. Dorsal and pectoral fins with dark spots, pectoral fin spots only on dorsal region, mainly on proximal region and along spines and first branched rays. Spots of dorsal fin arranged in vertical rows; one vertical row per interradial space, except for two specimens possessing one additional inconspicuous anterior row per interradial space. Pelvic fin with dark spots usually grouped on median region of branched rays. Anal fin usually lacking spots, rarely with inconspicuous spots. Caudal fin with few spots; caudal-fin spots occasionally vertically aligned in two to three bands. Head dark spots smaller than eye pupil; anterior spots smaller and progressively increase in size from anterior to posterior direction. Body and fins spots lager than head spots, progressively increase in size from anterior to posterior direction; larger body and fins spots approximately similar in size to eye pupil. Body spots not aligned. Abdomen spots rounded not aligned, very light and sometimes inconspicuous, slightly larger than body spots and pupil. Sexual dimorphism. No apparent sexual dimorphism. Distribution. The new species is known from eight localities in the Mearim River basin, northeast Brazil (Fig. 4). This river basin is located in a transition zone between the Amazon rainforest and the Brazilian Cerrado (Ab’Sáber, 2003; Fiaschi & Pirani, 2009). Ecological notes. Specimens of H. krikati sp. n. were collected in different locations of the Pindaré River drainage. The region is part of the Gurupi Mosaic, where the floristic complex of the Amazon Biome and of transitional areas with the Brazilian Cerrado is formed (Castro & Martins 1999; Celentano et al. 2018). Currently, this region is one of the most deforested areas of the Amazon Biome in Brazil, often affected by human actions, causing serious problems for the region, such as loss of forest cover and silting of rivers (Celentano et al. 2018). Etymology. The specific epithet krikati, honors the Krikati native people, a Jê-speaking culture, occurring in the Gurupi Mosaic region.

Introductions of invasive non-native species (and their subsequent impacts) are recognized as a major threat to native flora and fauna. This is especially true in island ecosystems such as the tropical island of Martinique. In 2018, one such aquatic invasive species, the suckermouth catfish Hypostomus robinii (Loricariidae), was reported for the first time in two of the islands rivers. H. robinii is a popular freshwater aquarium fish and native to tropical and sub-tropical South America. Since its initial discovery, a growing number of populations have been found, suggesting a larger distribution of this species through Martinique's hydrographic network. Here, we developed a novel survey technique (utilizing environmental DNA) and conducted a widespread survey across the island to assess the distribution of this invasive species. We were able to detect H. robinii in 22% of sites surveyed (18 out of 83) via our eDNA-based assay. The presence of these fish was confirmed using traditional trapping at 14 of these sites. Additionally, we used occupancy modeling to investigate the impact of different environmental covariates on the detection efficiency of the novel assay and the potential impacts of false positives and negatives. We highlight a decrease in the detection probability when water volume filtered increases. That said, the eDNA-based method proves a useful tool for the detection of this invasive fish species and monitoring its spread for management purposes.

In a recent expedition to the rio Grande basin, a tributary of the rio Parana in southern Brazil, individuals of the armoured catfish genus Hypostomus with a peculiar and beautiful colour pattern composed of pale vermiculations on the head and four to five horizontal stripes on the flanks were collected. Initially, the specimens were identified as a colour morph of the pale-spotted H. margaritifer. However, when we compared their partial cytochrome C oxidase subunit I (COI) mitochondrial gene to sequences of some typically pale-spotted H. margaritifer, the striped specimens were genetically distinct. Further analysis of the striped individuals revealed that they are the poorly known but valid species Hypostomus variipictus, which was described by Ihering in 1911 from the rio Pardo, a tributary of the rio Grande, upper rio Parana basin, in Sao Paulo State, Brazil. Since its descriptions, no robust taxonomic work has been published concerning this species. In this study, the newly sampled population was compared to the original description and to the holotype of H. variipictus, providing the foundation for a complete redescription, proper diagnosis, and first live colour illustration and description of the previously hidden H. variipictus.

Environmental disasters affecting Brazilian rivers have been frequent recently, especially involving mining activities. Two recent dam-rupture events suddenly released millions of cubic meters of iron tailings downstream into two major Brazilian watersheds. These events generated major losses to the environment and human life. Additionally, the biodiversity in both watersheds was still incompletely known. Two new species of the armoured catfish genus Hypostomus were discovered in the Rio Paraopeba and surrounding rivers of the Rio São Francisco Basin. The species share some main characteristics including a depressed body, large dark spots on a clearer background and the absence of keels on flanks. However, while one species (Hypostomus freirei sp. n.) has a large mandibular ramus and numerous slender teeth, the other (Hypostomus guajupia sp. n.) has a shorter mandibular ramus and few robust teeth. The discovery of these two new mid-sized fish species emphasizes the presumption that the effects of major environmental disasters cannot be fully estimated as local biodiversity is not completely known. This discovery in a recently devastated area also shows that tough environmental laws for the protection, supervision and mitigation of major impacts are urgently needed in developing countries.

The Hypostomini tribe comprises a single genus, Hypostomus, which possibly contains several monophyletic groups because of significant morphological variation and a variety of diploid numbers and karyotype formulas. The objective of this study was to infer evolutionary relationships among 21 species of Hypostomus found in Brazilian southeast and subsequently to identify chromosomal synapomorphies in the groupings formed. Two nuclear genes, rag1 and rag2, and two mitochondrial genes, mt-co1 and mt-cyb, were used to establish evolutionary relationships. Phylogenetic trees were inferred using the maximum likelihood (ML) method for mt-co1 and Bayesian analysis (BA) for all genes concatenated. Both phylogenetic trees showed two large monophyletic clades within Hypostomus. These clades are based on chromosome number, where haplogroup I contains individuals with 66–68 chromosomes and haplogroup II contains species with 72–80 chromosomes. A third monophyletic haplogroup was also observed using ML, formed by H. faveolus and H. cochliodon, which present 2n = 64, reinforcing the separation of groups in Hypostomus by diploid number. Robertsonian rearrangements were responsible for forming the different diploid numbers and for the diversity of karyotype formulas. Ag-NORs are predominantly multiple and located on st/a chromosomes, along with 18S rDNA sites; 5S rDNA sites are often seen in an interstitial position, following the trend already described for vertebrates. The groups based on traditional morphological taxonomy are considered artificial in this study; proposed colored patterns recognizing two large groups are supported by little chromosomal evidence, and it was considered based on homoplastic characters.

The correct identity and occurrence of the introduced armored catfish, locally known as “devil fish” or “pleco” in the Dominican Republic, is briefly described. Specimens were collected from six sites in the Dominican Republic. Several meristic and morphometric characters, as well as other external features including coloration, were examined. Results were compared with existing literature on fishes of the family Loricariidae. Examination revealed that specimens of the armored catfish, unofficially reported as Hypostomus plecostomus, actually belongs to the species Pterygoplichthys pardalis (Castelnau, 1855). It is inferred that this fish is established in Dominican inland waters, also the possibe occurrence of more than one species of Pterygoplichthys is discussed. This is the first report of this invasive species in the island of Hispaniola.

This review compiles and discusses the use of genetic markers applied in the study of the fish genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae). The database comprises 51 peer-review articles that were published in the last 52 years (1968-2020) and that approach analysis based on different classes of genetic markers. The use of cytogenetic and enzymatic markers was predominantly especially in population studies with the genus Hypostomus, while mitochondrial markers were the majority in phylogenetic studies. Although significant methodological advances have occurred for molecular evaluation, they are still modestly applied to the study of neotropical fish genera, in which Hypostomus is included. New perspectives, especially on integrative approaches, are needed to improve our knowledge of the genetic functionality of fishes.

Hypostomus robertsoni Dias & Zawadzki, 2021: 13, fig. 5. Holotype (Fig. 11): NUP 22740, 127.9 mm SL: Brazil, Paraná, Marialva, rio Keller, tributary of rio Ivaí, upper rio Paraná basin, 23°38’28”S, 51°51’31”W, C.H. Zawadzki, L.F. Pesenti, H.B. Ruiz & R. Vieira, 18 Aug 2014. Paratypes: 8 lots, 110 specimens —NUP 2597, 34, 58.4–147.5 mm SL (18, 84.3–135.7 mm SL): Brazil, Paraná, Marialva, rio Keller, rio Ivaí basin, upper rio Paraná basin, 23°38’28”S, 51°51’31”W, C.H. Zawadzki & H.F. Julio Jr, 10 Dec 1996. NUP 17253, 5, 88.9–108.9 mm SL: same locality as previous, L. Mommenshon, 15 Jun 2011. NUP 17255, 2, 76.2–111.9 mm SL: same locality as previous, H. B. Ruiz, Jun 2011. NUP 3744, 37, 58.7–119.4 mm SL (19, 93.5–119.4 mm SL): Brazil, Paraná, Marialva, rio Keller, rio Ivaí basin, upper rio Paraná basin, 23°38’25”S, 51°51’32”W, C.H. Zawadzki & W.J. da Graça, 1 Mar 2005. NUP 4842, 27, 89.8–122.0 mm SL (16, 92.0– 121.6 mm SL): Brazil, Paraná, Floresta, rio Ivaí, upper rio Paraná basin, Ivaí River, 23°42’01”S, 52°07’02”W, C.H. Zawadzki, 6 May 2003. NUP 7062, 1, 89.4 mm SL: Brazil, Paraná, Campo Mourão, rio Mourão, rio Ivaí basin, upper rio Paraná basin, 24°02’23”S, 52°16’22”W, C.H. Zawadzki, R. Ota, H. Message & L. Mommenshon, 7 Apr 2009. NUP 8535, 1, 172.5 mm SL: Brazil, Paraná, Turvo, rio Pedrinho, rio Ivaí basin, upper rio Paraná basin, 25°46’44”S, 51°25’35”W, D. Viana, 28 Feb 2009. NUP 8536, 3, 139.3– 156.9 mm SL: Brazil, Paraná, Turvo, rio Bonito, rio Ivaí basin, upper rio Paraná basin, 24°45’30”S, 51°24’49”W, D. Viana, 23 Feb 2009. Remarks: The coordinates from the lot NUP 2597 were incorrectly stated as being 23°38’28”S, 51°31’31”W in the original description., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 27, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Dias, A. C. & Zawadzki, C. H. (2021) Hypostomus hermanni redescription and a new species of Hypostomus (Siluriformes: Loricariidae) from Upper Parana River basin, Brazil. Neotropical Ichthyology, 19 (2), e 200093, 1 - 24. https: // doi. org / 10.1590 / 1982 - 0224 - 2020 - 0093"]}

Hypostomus melanephelis Zawadzki, Oliveira, de Oliveira & Rapp Py-Daniel, 2015: 51, fig. 1. Paratypes: 1 lot, 2 specimens — NUP 14130, 2, 154.5– 166.3 mm SL: Brazil, Pará, Itaituba, Pimental village, rio Tapajós, just downstream of mouth of rio Jamanxim, rio Amazonas basin, 4°33’41”S, 56°15’50”W, L. Rapp Py-Daniel & J. Zuanon, 22 Oct 1991., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 25, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Oliveira, A. S., de Oliveira, R. R. & Rapp Py-Daniel, L. (2015) Hypostomus melanephelis, a new armored catfish species from the rio Tapajos basin, Brazil (Teleostei: Loricariidae). Ichthyological Exploration of Freshwaters, 26 (1), 49 - 58."]}

Hypostomus velhochico Zawadzki, Oyakawa & Britski, 2017: 563, fig. 1. Paratypes: 5 lots, 5 specimens — NUP 12064, 1, 66.6 mm SL: Brazil, Minas Gerais, Presidente Juscelino, rio Cipó, tributary of rio das Velhas, rio São Francisco basin, 18°41’04”S, 43°59’18”W, P.S. Pompeu & C.B.M. Alves, 18 Aug 2001. NUP 12065, 1, 92.6 mm SL: Brazil, Minas Gerais, Pirapora, rio das Velhas, tributary to rio São Francisco, 17°14’47”S, 44°49’16”W, P.S. Pompeu & C.B.M. Alves, 27 Jun 2007. NUP 12066, 1, 82.8 mm SL: Brazil, Minas Gerais, Santana do Pirapama, rio das Velhas, rio São Francisco basin, 18°53’22”S, 44°08’15”W, P.S. Pompeu & C.B.M. Alves, 13 Jan 2007. NUP 12067, 1, 80.2 mm SL: Brazil, Minas Gerais, Santana do Pirapama, rio das Velhas, rio São Francisco basin, 19°31’50”S, 43°55’33”W, P.S. Pompeu & C.B.M. Alves, 29 Jun 2000. NUP 16260, 1, 51.1 mm SL: Brazil, Minas Gerais, Formoso, rio Cariranha, tributary to rio Preto, rio São Francisco basin, Parque Nacional Grande Sertão Veredas, 15°07’10”S, 45°45’21”W, M.L. Ribeiro, V. Perdigão & E.C. Lopes, 28 Apr 1999.

Hypostomus peckoltoides Zawadzki, Weber & Pavanelli, 2010: 722, fig. 2. Paratypes: 4 lots, 9 specimens —NUP 2613, 1, 91.0 mm SL: Brazil, Mato Grosso, Santo Antônio do Leverger, rio Cuiabá, upper rio Paraguai basin, 15°58’26”S, 55°56’26”W, Nupélia staff, 24 Aug 2003. NUP 5216, 2, 88.9– 92.8 mm SL: same locality and collector as previous, 23 Aug 2000; NUP 5217, 3, 85.5–98.2 mm SL: same locality and collector as previous, 20 Jun 2000; NUP 5218, 3, 80.7–86.4 mm SL: same locality and collector as previous, 19 Jun 2000., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 26, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Weber, C. & Pavanelli, C. S. (2010) A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin. Neotropical Ichthyology, 8 (4), 719 - 725. https: // doi. org / 10.1590 / S 1679 - 62252010000400003"]}

Hypostomus pastinhai Zawadzki & Penido, 2021: 10, fig. 6. Holotype (Fig. 10): NUP 22653, 250.8 mm SL: Brazil, Bahia, Paulo Afonso, channel of rio São Francisco, 09°25’30”S, 38°10’56”W, C.H. Zawadzki, I.S. Penido, E. Santana, R. H. Nascimento & J. Santos, 14 Feb 2018.

Hypostomus nigrolineatus Zawadzki, Carvalho, Birindelli & Azevedo, 2016: 264, fig. 1. Paratypes: 3 lots, 9 specimens — NUP 15447, 2, 162.4– 212.5 mm SL: Brazil, Minas Gerais, Grão Mogol, rio Itacambiruçu, tributary of rio Jequitinhonha, 16°36’23”S, 42°49’46”W, T. C. Pessali & G. C. G. Melo, 9 Oct 2013. NUP 16879, 3, 103.3– 138.7 mm SL: Brazil, Minas Gerais, Itinga, rio Araçuaí, tributary of rio Jequitinhonha, 16°37’27”S, 41°48’13”W, J.C. Garavello et al., 23 May 1989. NUP 16885, 4, 138.8– 193.3 mm SL: Brazil, Minas Gerais, Fruta de Leite, rio Vacaria, tributary of rio Jequitinhonha, 16°16’54”S, 42°30’31”W, G.C.M. Melo & I.S. Penido, 2 Sept 2013., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 25, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Carvalho, P. H., Birindelli, J. L. & Azevedo, F. M. (2016) Hypostomus nigrolineatus, a new dark-striped species from the rio Jequitinhonha and rio Pardo basins, Brazil (Siluriformes, Loricariidae). Ichthyological Exploration of Freshwaters, 27 (3), 263 - 274."]}

Hypostomus basilisko Tencatt, Zawadzki & Froehlich, 2014: 595, fig. 10. Paratypes: 5 lots, 13 specimens —NUP 5076, 3, 144.5– 183.8 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, rio Salobra, rio Paraguai basin, 20°29’44”S, 56°51’48”W, A.G. Bifi, 27 Dec 2006. NUP 13832, 1 c&s, 53.9 mm SL: same locality and collectors as previous, 27 Dec 2006. NUP 14503, 1, 171.9 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, rio Salobra, rio Paraguai basin, 20°46’49”S, 56°44’31”W, O. Froehlich, 3 Sep 2005. NUP 14504, 1, 154.6 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, córrego Salobrinha, rio Paraguai basin, 20°40’12”S, 56°46’12”W, O. Froehlich, 31 Jul 2006. NUP 14505, 7, 37.5–165.9 mm SL: same locality and collectors as previous, Mar 2007., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 19, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Tencatt, L. F. C. & Froehlich, O. (2014) A new unicuspid-toothed species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from the rio Paraguai basin. Neotropical Ichthyology, 12 (1), 97 - 104. https: // doi. org / 10.1590 / S 1679 - 62252014000100010"]}

Hypostomus yaku Martins, Langeani & Zawadzki, 2014: 731, fig. 1. Paratypes: 1 lot, 6 specimens — NUP 15348, 6, 29.8–58.1 mm SL (41.3–58.1 mm SL): Brazil, Goiás, Rio Quente, tributary of rio Piracanjuba, rio Quente basin, near water treatment station, rio Paranaíba drainage, upper rio Paraná basin, 17°46’32”S, 48°45’56”W, 618 meters a.s.l., F. Langeani, F. R. Carvalho & F.O. Martins, 7 Mar 2012., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 29, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Martins, F. O., Langeani, F. & Zawadzki, C. H. (2014) A new spiny species of Hypostomus Lacepede (Loricariidae: Hypostominae) from thermal waters, upper rio Parana basin, central Brazil. Neotropical Ichthyology, 12 (4), 729 - 736. https: // doi. org / 10.1590 / 1982 - 0224 - 20140035"]}

Hypostomus freirei Penido, Pessali & Zawadzki, 2021: 4, fig 3. Holotype (Fig. 6): NUP 22602, 208.5 mm SL: Brazil, Minas Gerais, Belo Vale, rio Paraopeba, rio São Francisco basin 20°27’19”S, 43°59’4”W, I.S. Penido, G.M. Santos, E. Fernandes, T. F. Teixeira, M.H. Sabaj, G.C. Zawadzki & C.H. Zawadzki, 11 Jan 2019. Paratypes: 1 lot, 18 specimens — NUP 22603, 18, 75.8–204.2 mm SL: collected with holotype., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 21, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Penido, I. S., Pessali, T. C. & Zawadzki, C. H. (2021) When destruction comes first: two new species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from a deeply-impacted river in the Rio Sao Francisco Basin in Brazil. Journal of Fish Biology, 2021, 1 - 14. https: // doi. org / 10.1111 / jfb. 14674"]}

Hypostomus faveolus Zawadzki, Birindelli & Lima, 2008: 397, fig. 1. Paratype: 1 lot, 1 specimen —NUP 5560, 1, 93.7 mm SL: Brazil, Goiás, between Crixás and Nova Crixás, córrego da Taboca, tributary of rio Crixás-Mirim, on road GO 336, rio Tocantins basin, 14°19’27”S, 50°12’32”W, C. Chamon et al., 28 Jul 2005., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 21, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Birindelli, J. L. & Lima, F. C. T. (2008) A new pale-spotted species of Hypostomus Lacepede (Siluriformes: Loricariidae) from the rio Tocantins and rio Xingu basins in central Brazil. Neotropical Ichthyology, 6 (3), 395 - 402. https: // doi. org / 10.1590 / S 1679 - 62252008000300012"]}

Hypostomus weberi Carvalho, Lima & Zawadzki, 2010: 45, fig. 3. Paratype: 1 lot, 1 specimen —NUP 6344, 1, 156.6 mm SL: Brazil, Amazonas, rio Marauiá, near the mouth, “igapó” (= flooded forest), rio Negro basin, 0°24’S, 65°12’W, M. Goulding, 27 May 1979., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 28, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Carvalho, P. H., Lima, F. C. T. & Zawadzki, C. H. (2010) Two new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the rio Negro basin in Brazil. Neotropical Ichthyology, 8 (1), 39 - 48. https: // doi. org / 10.1590 / S 1679 - 62252010000100006"]}

Hypostomus krishnamurtii Zawadzki, Penido & Lucinda, 2020: 3, fig. 1. Holotype (Fig. 9): NUP 9259, 146.7 mm SL, rio Uru, tributary of rio das Almas, Heitoraí, Goiás, Brazil, 15°47’45”S, 49°50’18”W, D.S. Mendonça, Feb 2009. Paratypes: 8 lots, 27 specimens — NUP 16914, 1, 109.3 mm SL: Brazil, Tocantins, São Salvador do Tocantins, channel of rio Tocantins, 12°44’37”S, 48°14’08”W, Limnobios staff, 15 Jan 2010. NUP 16919, 5, 55.2–119.4 mm SL: Brazil, Goiás, Minaçu, rio Mocambão, tributary of rio Tocantins, 13°11’38”S, 48°15’00”W, Limnobios staff, 1 Aug 2008; NUP 16920, 1, 106.5 mm SL: same locality and collector as previous, Aug 2011. NUP 19180, 1, 110.1 mm SL: Brazil, Goiás, Minaçu, rio Cana-Brava, tributary of rio Tocantins, 13°15’04”S, 48°12’16”W, J.D. Latini, Feb 2010. NUP 19150, 1, 86.8 mm SL: Brazil, Goiás, Formosa, unknown stream name, tributary of rio Cana-Brava, rio Tocantins basin, 15°09’29”S, 47°02’04”W, P. R. L. Silva, 1 Aug 2016. NUP 19149, 2, 88.5–97.3 mm SL: Brazil, Goiás, Padre Bernardo, unknown stream name, tributary of rio Maranhão, rio Tocantins basin, 15°10’09”S, 48°07’19”W, P. R. L. Silva, 1 Aug 2016. NUP 21261, 13, 55.8–108.6 mm SL: Brazil, Goiás, São Gabriel de Goiás, ribeirão Cocal, tributary of rio Arraial Velho, 15°11’20”S, 47°45’28”W, C. H. Zawadzki, I.S. Penido, T. C. Pessali, G. Nardi, 19 Mar 2019. NUP 9254, 3, 121.7– 162.1 mm SL: Brazil, Goiás, Heitoraí, rio Uru, tributary of rio das Almas, 15°47’45”S, 49°50’18”W, D.S. Mendonça, Feb 2009. Remarks: The number of specimens from the lot NUP 21261 was incorrectly cited as 19 in the original description; however, the actual number is 13 as six specimens were donated to other ichthyological collections: ANSP 207306 (2 specimens), MNRJ 51842 (2 specimens), and UNT 21017 (2 specimens).

Hypostomus sertanejo Zawadzki, Ramos & Sabaj, 2017: 320, fig. 1. Paratypes: 4 lots, 23 specimens — NUP 14689, 2, 73.4–80.1 mm SL: Brazil, Ceará, Tabuleiro do Norte, rio Jaguaribe, 05°13’39”S, 38°11’52”W, C.H. Zawadzki, T. P.A. Ramos, S.A.Q.A. Ramos & R. T. C. Ramos, 12 June 2011. NUP 14690, 10, 41.1–111.9 mm SL: Brazil, Ceará, Jaguaribe, Santana dam, rio Jaguaribe, 05°48’29”S, 38°39’09” W, C.H. Zawadzki, T. P.A. Ramos, S.A.Q.A. Ramos & R. T. C. Ramos, 12 June 2011. NUP 14692, 10, 58.3–99.6 mm SL: Brazil, Ceará, Icó, rio Salgado, tributary of rio Jaguaribe, 06°24’28.9”S, 38°52’06.6”W, C.H. Zawadzki, T. P.A. Ramos, S.A.Q.A. Ramos & R. T.C. Ramos, 12 June 2011. Rio Choró basin. NUP 14688, 1, 180.0mm SL: Brazil, Ceará, Chorózinho, rio Choró, 04°19’22.2”S, 38°30’31.7”W, C.H. Zawadzki, T. P.A. Ramos, S. A. Q. A Ramos & R. T.C. Ramos, 11 June 2011. Remarks: The coordinates from the lot NUP 14692 were incorrectly stated as being 06°24’28”S, 52°30’06”W in the original description., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 27, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Ramos, T. P. & Sabaj, M. (2017) Hypostomus sertanejo (Siluriformes: Loricariidae), new armoured catfish species from north-eastern Brazil. Journal of Fish Biology, 91 (1), 317 - 330. https: // doi. org / 10.1111 / jfb. 13349"]}

Hypostomus guajupia Penido, Pessali & Zawadzki, 2021: 9, fig. 8. Holotype (Fig. 8): NUP 22601, 196.7 mm SL: Brazil, Minas Gerais, Curvelo, rio Paraopeba, downstream to Retiro Baixo hydroelectric dam, 18°52’23.2”S, 44°46’51.9”W, T. Barroso & A.A. Rodrigues, 23 Mar 2016. Paratypes: 1 lot, 11 specimens — NUP 22604, 11, 160.6– 207.7 mm SL: collected with holotype., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 22, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Penido, I. S., Pessali, T. C. & Zawadzki, C. H. (2021) When destruction comes first: two new species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from a deeply-impacted river in the Rio Sao Francisco Basin in Brazil. Journal of Fish Biology, 2021, 1 - 14. https: // doi. org / 10.1111 / jfb. 14674"]}

Hypostomus khimaera Tencatt, Zawadzki & Froehlich, 2014: 598, fig. 13. Paratypes: 1 lot, 4 specimens — NUP 14506, 4, 125.7– 141.5 mm SL: Brazil, Mato Grosso, Porto Estrela, córrego Salobo, rio Paraguai basin, Serra das Araras, 15°39’03”S, 57°12’54”W, O.A. Shibatta, 2–3 Aug 1999.

Hypostomus kuarup Zawadzki, Birindelli & Lima, 2012: 247, fig. 1. Paratypes: 1 lot, 5 specimens — NUP 11269, 5, 88.9–127.8 mm SL: Brazil, Mato Grosso, Campinápolis, rio Culuene (at the former rapids, current area of reservoir Paranatinga II), rio Xingu basin, 13°51’03”S, 53°15’31”W, J.L.O. Birindelli, L.M. Sousa & A. Akama, 21 Aug 2006., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 25, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Birindelli, J. L. & Lima, F. C. T. (2012) A new armored catfish species of the genus Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from the upper rio Xingu basin, Brazil. Neotropical Ichthyology, 10 (2), 245 - 253. https: // doi. org / 10.1590 / S 1679 - 62252012000200003"]}

Hypostomus bimbai Zawadzki & Penido, 2021: 2, fig. 1. Holotype (Fig. 5): NUP 22652, 313.5 mm SL: Brazil, Bahia, Paulo Afonso, channel of Rio São Francisco, 09°25’29”S, 38°10’56”W, C.H. Zawadzki, I.S. Penido, E. Santana, R. H. Nascimento & J. Santos, 14 Feb 2018. Paratypes: 2 lots, 5 specimens — NUP 22690, 4, 241.5– 302.2 mm SL: collected with holotype. NUP 13968, 1, 195.0 mm SL: Brazil, Bahia, Paulo Afonso, channel of Rio São Francisco, 09°21’48”S, 38°12’37”W, B.D.F. Costa, 13 Jun 2009., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 19, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H. & Penido, I. S. (2021) Hypostomus bimbai and H. pastinhai, two new depth-sheltered species of Hypostomus from the lower Rio Sao Francisco basin, Brazil. Ichthyological Exploration of Freshwaters, IEF- 1159, 1 - 15. https: // doi. org / 10.23788 / IEF- 1159"]}

Hypostomus multidens Jerep, Shibatta & Zawadzki, 2007: 437, fig. 1. Paratypes: 3 lots, 8 specimens —NUP 2561, 5, 96.3–155.4 mm SL: Brazil, Paraná, Guaíra, Itaipu Reservoir, rio Paraná, 25°00’S, 54°15’W, 1983–1993. NUP 4821, 2, 160.0– 169.3 mm SL: Brazil, Paraná, Tibagi, rio Tibagi, A.M. Geahl, 18 Feb 2002. NUP 4829, 1, 184.3 mm SL: Brazil, Paraná, Guaíra, rio Paraná, T. Becker, 27 Jul 2002., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 25, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Jerep, F. C., Shibatta, O. A. & Zawadzki, C. H. (2007) A new species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from the upper rio Parana basin, Southern Brazil. Neotropical Ichthyology, 5 (4), 435 - 442. https: // doi. org / 10.1590 / S 1679 - 62252007000400002"]}

Hypostomus jaguar Zanata, Sardeiro & Zawadzki, 2013: 249, fig. 1. Paratypes: 1 lot, 2 specimens —NUP 4448, 2, 126.8– 152.9 mm SL: Brazil, Bahia, Itaberaba, rio Paraguaçu basin, Fazenda Santo Antônio, 10 km from Vila São Vicente, out of roadway BA 242, 134 meters a.s.l., A.M. Zanata, P. Camelier, J.O. Birindelli, O. T. Oyakawa, M.P. Geraldes & P. Moura, 7 June 2005., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 23, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zanata, A. M., Sardeiro, B. & Zawadzki, C. H. (2013) A new dark-dotted species of Hypostomus Lacepede (Siluriformes: Loricariidae) from rio Paraguacu, Bahia State, Brazil. Neotropical Ichthyology, 11 (2), 247 - 256. https: // doi. org / 10.1590 / S 1679 - 62252013000200002"]}

Hypostomus renestoi Zawadzki, da Silva & Troy, 2018: 262, fig. 5. Paratypes: 9 lots, 28 specimens —NUP 932, 4, 41.3–107.5 mm SL: Brazil, Mato Grosso, Chapada dos Guimarães, rio Manso, tributary of rio Cuiabá, rio Paraguai basin, 14°52’22”S, 55°46’28”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 14 Nov 2003. NUP 13478, 1, 92.5 mm SL: same locality and collector as previous, 17 Jul 2000. NUP 14576, 2, 122.0– 131.7 mm SL: same locality and collector as previous, 18 May 2000. NUP 14572, 9, 82.2–110.1 mm SL: Brazil, Mato Grosso, Chapada dos Guimarães, rio Manso, tributary of rio Cuiabá, rio Paraguai basin, 14°48’37”S, 55°16’34”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 18 Sep 2000. NUP 14573, 7, 80.8– 90.8 mm SL: Brazil, Mato Grosso, Chapada dos Guimarães, rio Manso, tributary of rio Cuiabá, rio Paraguai basin, 14°50’21”S, 55°37’20”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 18 Apr 2000. NUP 14574, 1, 107.1 mm SL: Brazil, Mato Grosso, Rosário Oeste, córrego Custódio, tributary of rio Cuiabá, rio Paraguai basin, 14°54’40”S, 56°28’11”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 22 Jul 2000. NUP 14575, 1, 108.1 mm SL: Brazil, Mato Grosso, Chapada dos Guimarães, rio Manso, tributary of rio Cuiabá, rio Paraguai basin, 14°52’20”S, 55°47’52”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 18 Apr 2000. NUP 14861, 2, 91.1–95.9 mm SL: Brazil, Mato Grosso, Chapada dos Guimarães, rio Palmeiras, tributary of rio Manso, rio Paraguai basin, 14°48’27”S, 55°38’28”W, J.D. Latini, W.M. Domingues & S. Veríssimo, 18 Apr 2000. NUP 17801, 1, 108.1 mm SL: Brazil, Mato Grosso, Cuiabá, lagoa da Belita, tributary of rio Coxipó, rio Paraguai basin, 15°38’19”S, 55°59’30”W, W.P. Troy, 6 Oct 2010.

Hypostomus delimai Zawadzki, de Oliveira & Debona, 2013: 75, fig 1. Paratypes: 3 lots, 3 specimens — NUP 11015, 1, 204.3 mm SL: Brazil, in the border of the States of Tocantins and Pará, border of Ananás and São Geraldo do Araguaia, rio Araguaia, 06°08’14”S, 48°19’52”W, T. Debona, 9 Jul 2009. NUP 11016, 1, 176.7 mm SL: Brazil, Tocantins, Araguanã, rio Lontra, tributary to rio Araguaia, 06°33’56”S, 48°38’11”W, T. Debona & C.H. Zawadzki, 8 May 2009. NUP 11017, 1, 205.5 mm SL: Brazil, border of the States of Tocantins and Pará, Ananás, rio Araguaia, 06°08’14”S, 48°19’52”W, T. Debona & C.H. Zawadzki, 8 May 2009., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 20, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., de Oliveira, R. R. & Debona, T. (2013) A new species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil. Neotropical Ichthyology, 11 (1), 73 - 80. https: // doi. org / 10.1590 / S 1679 - 62252007000400002"]}

Hypostomus labyrinthus de Oliveira, Ribeiro, Canto & Zawadzki, 2020: 491, fig. 1. Paratype: 1 lot, 1 specimen — NUP 22302, 1, 160.4 mm SL: Brazil, Pará, Rurópolis, rio Água Boa, tributary to rio Cupari, rio Tapajós basin, 4°6’9.5”S, 55°21’18.9”W, F. Ribeiro, C. Oliveira & J. Souza, 12 Jun 2014., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 25, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["de Oliveira, R. R., Ribeiro, F. R., Canto, A. L. & Zawadzki, C. H. (2020) A new species of the Neotropical loricariid Hypostomus cochliodon group (Hypostominae) from the lower Rio Tapajos basin, Brazilian Amazon. Journal of Fish Biology, 97 (2), 490 - 498. https: // doi. org / 10.1111 / jfb. 14399"]}

Hypostomus dardanelos Zawadzki & Carvalho, 2014: 45, fig 1. Paratypes: 12 lots, 25 specimens —NUP 6758, 8, 118.8– 160.5 mm SL; NUP 7474, 4, 123.0–181.0 mm SL: Brazil, Mato Grosso, Aripuanã, rio Praia Grande (at its mouth to rio Aripuanã downstream cachoeira Dardanelos and Andorinhas), rio Madeira basin, 10°02’51”S, 59°23’21”W, I.M. Fernandes, 8 Aug 2008. NUP 6759, 2, 115.5– 141.2 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to igarapé Guaribal, rio Aripuanã basin, 10°06’35”S, 59°26’12”W, I.M. Fernandes, 8 Aug 2008. NUP 6760, 1, 143.5 mm SL: same locality and collector as previous, 18–19 May 2008 NUP 6765, 1, 55.0 mm SL: same data as NUP 6760. NUP 7694, 1, 42.0 mm SL: same locality and collector as previous, 5 Aug 2008. NUP 6775, 1, 151.8 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to rio Praia Grande, 10°02’51”S, 59°23’21”W, I.M. Fernandes, 19 May 2008. NUP 9452, 1, 40.6 mm SL: same data and collector as previous, 17 May 2008. NUP 7098, 1, 46.0 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to igarapé Praia Grande, rio Aripuanã basin 10°02’45”S, 59°27’24”W, I.M. Fernandes, 5 Aug 2008. NUP 7130, 2, 40.0– 42.7 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to igarapé Praia Grande, rio Aripuanã basin, 10°02’59”S, 59°27’40”W, I.M. Fernandes, 5 Aug 2008. NUP 7192, 1, 42.0 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to igarapé Rio Claro, rio Aripuanã basin, 10°03’09”S, 59°33’20”W, I. M. Fernandes, 6 Aug 2008. NUP 7637, 2, 12.3–40.1 mm SL: Brazil, Mato Grosso, Aripuanã, unnamed stream, tributary to igarapé Guaribal, rio Aripuanã basin, 10°04’37”S, 59°31’04”W, I.M. Fernandes, 15 May 2008.

Hypostomus froehlichi Zawadzki, Nardi & Tencatt, 2021: 102, fig. 1. Holotype (Fig. 7): NUP 22689, 226.2 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, córrego Salobrinha, tributary of rio Miranda, rio Paraguai basin, 20°40’57.8”S, 56°47’09.6”W, col. O. Froehlich et al., Mar 2007. Paratypes: 9 lots, 24 specimens —NUP 5077, 5, 52.2–201.1 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, rio Salobra, rio Paraguai basin, 20°29’44.0”S, 56°51’48.0”W, 27 Dec 2006, A.G. Bifi. NUP 12138, 2, 235.3– 239.1 mm SL; NUP 12139, 2, 223.0– 227.8 mm SL; NUP 12140, 2, 235.3– 241.8 mm SL; NUP 12141, 1, 225.0 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, rio Salobra, rio Paraguai basin, 20°46’49.0”S, 56°44’31.0”W, Dec 2005, O. Froehlich et al. NUP 13392, 4, 177.0– 200.7 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, córrego Salobrinha, rio Paraguai basin, 20°40’59.0”S, 56°.47’12.0”W, O. Froehlich et al, 27 Jul 2006. NUP 13387, 1, 187.3 mm SL: same locality and collector as previous, Mar 2007. NUP 12142, 4, 127.8–233.0 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, córrego Salobrinha, rio Paraguai basin, 20.40’12.0”S, 56°46’12.0”W, Mar 2007, O. Froehlich et al. NUP 4247, 3, 106.1– 132.9 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, córrego Salobrinha, rio Paraguai basin, 20°40’60.0”S, 56°47’10.0”W, O. Froehlich et al., 31 Dec 2005., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 21, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Nardi, G. & Tencatt, L. F. C. (2021) The crystalline waters of the Bodoquena Plateau revealed Hypostomus froehlichi (Siluriformes: Loricariidae), a new armored catfish from the rio Paraguay basin in Brazil. Zootaxa, 4933 (1), 98 - 112. https: // doi. org / 10.11646 / zootaxa. 4933.1.4"]}

Hypostomus nigropunctatus Garavello, Britski & Zawadzki, 2012: 278, fig. 7. Paratypes: 7 lots, 8 specimens —NUP 5081, 1, 195.0 mm SL: Brazil, Paraná, Mangueirinha / Reserva do Iguaçu, downstream Salto Segredo reservoir, rio Iguaçu, 25°45’S, 52°05’W, Nupélia staff, 3 Feb 1995. NUP 5082, 1, 171.4 mm SL: Brazil, Paraná, Reserva do Iguaçu, rio Jordão (at its mouth), 25°46’17”S, 52°06’51”W, Nupélia staff, 26 Nov 1996. NUP 5083, 1, 208.4 mm SL: Brazil, Paraná, Mangueirinha, rio Covó, 25°58’13”S, 52°09’10”W, Nupélia staff, 3 Dec 1993. NUP 5084, 2, 224.0–230.0 mm SL: same locality and collector as previous, 4 Feb 1994. NUP 5085, 1, 200.5 mm SL: same locality and collector as previous, 3 Feb 1999. NUP 7518, 1, 173.8 mm SL: same locality and collector as previous, 4 Feb 1994. NUP 7519, 1, 224.0 mm SL: same locality and collector as previous, 2 Dec 1994. Remarks: The standard length from the lot NUP 5081 was incorrectly cited as 84.3 mm SLin the original description., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on pages 25-26, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Garavello, J. C., Britski, H. A. & Zawadzki, C. H. (2012) The cascudos of the genus Hypostomus Lacepede (Ostariophysi: Loricariidae) from the rio Iguacu basin. Neotropical Ichthyology, 10 (2), 263 - 283. https: // doi. org / 10.1590 / S 1679 - 62252012000200005"]}

Hypostomus heraldoi Zawadzki, Weber & Pavanelli, 2008: 409, fig. 5. Paratypes: 16 lots, 41 specimens —NUP 2280, 3, 178.4– 194.6 mm SL: Brazil, Goiás, Caldas Novas, Pires do Rio, rio Pirapitinga, tributary to rio Corumbá, upper rio Paraná basin, 17°43’37”S, 48°32’54”W, Nupélia staff, 9 Abr 1999. NUP 4048, 2, 157.2– 189.3 mm SL: same locality and collector as previous, 9 Dec 1999. NUP 5623, 5, 138.2– 183.1 mm SL: same locality and collector as previous, 12 Jan 2000. NUP 5624, 5, 133.2– 207.6 mm SL: same locality and collector as previous, 25 Jan 1998. NUP 5625, 4, 138.4– 163.6 mm SL: same locality and collector as previous, 24 Oct 1997. NUP 2281, 1, 200.8 mm SL: Brazil, Goiás, Caldas Novas, Ipameri, rio Corumbá (Corumbá Reservoir), tributary to rio Paranaíba, upper rio Paraná basin, 17°43’37”S 48°32’54”W, Nupélia staff, 9 Apr 1999. NUP 4042, 1, 141.8 mm SL: Brazil, Goiás, Caldas Novas, Pires do Rio, rio do Peixe, tributary to rio Corumbá, upper rio Paraná basin, 17°34’24”S, 48°29’50”W, Nupélia staff, 20 May 1996. NUP 4051, 1, 138.3 mm SL: Brazil, Goiás, Caldas Novas, Ipameri, rio Corumbá (Corumbá Reservoir), tributary to rio Paranaíba, upper rio Paraná basin, 17°42’43”S, 48°29’52”W, Nupélia staff, 25 Dec 1997. NUP 2282, 6, 70.6–192.8 mm SL: Brazil, Goiás, Caldas Novas, Pires do Rio, rio Corumbá, tributary to rio Paranaíba, upper rio Paraná basin, 17°43’37”S 48°32’54”W, Nupélia staff, 9 Apr 1999. NUP 5648, 3, 162.4– 189.4 mm SL: same locality and collector as previous, 20 Sep 1996. NUP 5650, 1, 146.4 mm SL: same locality and collector as previous, 21 Jun 1997. NUP 5651, 1, 112.3 mm SL: same locality and collector as previous, 11 Nov 1996. NUP 6049, 5, 36.5–104.0 mm SL: Brazil, Goiás, Corumbaíba, córrego Gameleira, tributary to rio Corumbá, upper rio Paraná basin, 17°59’05”S, 48°29’46”W, C.H. Zawadzki, B.F. Morales & V. S. Ferreira, 17 Jul 2008. NUP 6050, 1, 75.0 mm SL: Brazil, Goiás, Corumbaíba, córrego Libório, tributary to rio Corumbá, upper rio Paraná basin, 17°55’48”S, 48°28’57”W, C.H. Zawadzki, B.F. Morales & V. S. Ferreira, 17 Jul 2008. NUP 5696, 1, 115.5 mm SL: Brazil, Minas Gerais, Poços de Caldas, rio Muzambinho, tributary to rio Grande, upper rio Paraná basin, 21°44’50”S, 46°28’07”W, L.H.G. Pereira, 24 Nov 2007. NUP 5697, 1, 198.8 mm SL: Brazil, Minas Gerais, Perdões, rio Grande (Funil Reservoir), tributary to upper rio Paraná, 21°08’S, 45°01’W, UFLA staff, 26 Sep 2002., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 22, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Weber, C. & Pavanelli, C. S. (2008) Two new species of Hypostomus Lacepede (Teleostei: Loricariidae) from the upper rio Parana basin, Central Brazil. Neotropical Ichthyology, 6 (3), 403 - 412. https: // doi. org / 10.1590 / S 1679 - 62252008000300013"]}

Hypostomus careopinnatus Martins, Marinho, Langeani & Serra, 2012: 495, fig. 1. Paratypes: 1 lot, 5 specimens — NUP 11257, 5, 30.2–53.8 mm SL: Brazil, Mato Grosso, Alto Araguaia, tributary of rio Ariranha, rio Taquari drainage, upper rio Paraguai basin, 17°18’37”S, 53°32’22”W, F. Langeani, J.P. Serra, M.M.F. Marinho, F.O. Martins, 3 June 2010., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 20, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Martins, F. O., Marinho, M. M., Langeani, F. & Serra, J. P. (2012) A New Species of Hypostomus (Siluriformes: Loricariidae) from the Upper Rio Paraguay Basin, Brazil. Copeia, 2012 (3), 494 - 500. https: // doi. org / 10.1643 / CI- 11 - 011"]}

Hypostomus perdido Zawadzki, Tencatt & Froehlich, 2014: 99, fig. 1. Paratypes: 3 lots, 29 specimens — NUP 12143, 10, 136.4– 166.3 mm SL; NUP 12144, 18, 109.1– 152.4 mm SL; NUP 14406, 1 c&s, 124.0 mm SL: Brazil, Mato Grosso do Sul, Bodoquena, rio Perdido, rio Paraguai basin, 21°17’09”S, 56°41’47”W, O. Froehlich, 8 Sep 2005., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 27, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Zawadzki, C. H., Tencatt, L. F. C. & Froehlich, O. (2014) A new unicuspid-toothed species of Hypostomus Lacepede, 1803 (Siluriformes: Loricariidae) from the rio Paraguai basin. Neotropical Ichthyology, 12 (1), 97 - 104. https: // doi. org / 10.1590 / S 1679 - 62252014000100010"]}