Search

The Neotropical genus Heteragrion Selys, 1862 is one of the most speciose among Zygoptera. Notwithstanding, most of its species are poorly known, especially those from undersampled areas such as Northeastern Brazil. Here, we describe Heteragrion lencionii sp. nov., from protected areas of Sergipe state (Holotype ♂, Brazil, Sergipe, Areia Branca, Serra de Itabaiana National Park, -10.7484, -37.3390, 179 m, 7.xii.2020, A.B. Farias & A.E. dos Santos leg., in UFS). This is only the second Heteragrion species discovered as new for the Northeastern region of Brazil, separated from other congeners by cercus morphology and thoracic coloration pattern.

Heteragrion gorbi sp. nov. (Zygoptera: Heteragrionidae) is described and diagnosed based on six ♂♂ and one ♀. The specimens were collected in a stream in a Neotropical savannah fragment in São Carlos, São Paulo, Brazil. We present pictures of the holotype and the female. This is a species with blue coloration pattern, rare among its congeners.

HETERAGRIONIDAE Rácenis, 1959 Two genera of Heteragrionidae occur in Ecuador. They are large to medium-sized damselflies that perch with the wings held out horizontally. All are forest stream species, from low to medium elevations., Published as part of Mauffray, William F. & Tennessen, Kenneth J., 2019, A Catalogue and Historical Study of the Odonata of Ecuador, pp. 1-265 in Zootaxa 4628 (1) on page 81, DOI: 10.11646/zootaxa.4628.1.1, http://zenodo.org/record/3335707, {"references":["Racenis, J. (1959) Notas taxonomicas sobre la familia Megapodagrionidae (Odonata: Zygoptera) con la sinopsis de las especies venezolanas. Acta Biologica Venezuelica, 2, 335 - 367."]}

Enallagma Charpentier, 1840 A large genus of mostly North American species, with very few species occurring in South America. Adults of most species are predominantly black with blue stripes and spots (Fig. 20) although some North American species have orange, red or burgundy stripes. See Heckman (2008) for species identification in South America. Habitats of this genus vary widely and include vegetated ponds, lakes, slow-flowing ditches and small streams. * Enallagma civile (Hagen, 1861) . Publ. Recs. CEN, COL, VEN: (H08), (P11), Pérez et al. (2013). Addl. Data. SU, Lago Agrio: 1 ♂, 18 km E of Lago Agrio, 30 viii 1975, leg. A. Langley & J. Cohen, det. RWG [USNM]. Enallagma novaehispaniae Calvert, 1907. Publ. Recs. ECU: (L06), (H08), (P11), (H14); GY: * Campos (1922 — as E. coecum var. novae-hispaniae). Also ARG, BRA, CEN, COL, PER, TTO, VEN: (L06), (H08), (P11). Addl. Data. EO, Santa Rosa: [FSCA, JTJ, KJT]; GY, Balao: [FSCA, KJT]; Naranjal: [FSCA, RWG]; MN, El Carmen: [JTJ]; Pedernales: [FSCA, KJT]; MS, Morona: [KJT]; NA, Tena: [FSCA, UTIC, KJT, SWD, TWD, USNM]; OR, Francisco de Orellana: [FSCA, SWD]; SD: [FSCA]; SU, Gonzalo Pizarro: [RWG]; Lago Agrio: [SWD]; ZC, Yantzaza: [FSCA]., Published as part of Mauffray, William F. & Tennessen, Kenneth J., 2019, A Catalogue and Historical Study of the Odonata of Ecuador, pp. 1-265 in Zootaxa 4628 (1) on page 48, DOI: 10.11646/zootaxa.4628.1.1, http://zenodo.org/record/3335707, {"references":["Hagen, H. A. (1861) Synopsis of the Neuroptera of North America, with a list of the South American species. Smithsonian Miscellaneous Collections, Washington. Smithsonian Institution, Washington, 347 pp. https: // doi. org / 10.5962 / bhl. title. 60275","Perez Gutierrez, L., Montes-Fontalvo, J. & Moreno, M. (2013) Libelulas de Colombia, una Guia de Campo para su Identificacion. Universidad del Atlantico, Atlantico, 206 pp.","Calvert, P. P. (1907) Odonata. In: Godman, F. D. & Salvin, O. (Eds.), Biologia Centrali-Americana-Insecta Neuroptera. R. H. Porter & Dulau Co., London, pp. 309 - 404.","Campos, F. (1922) Catalogo Sistematico y Sinonimico de los Odonatos del Ecuador. Revista del Colegio Nacional Vicente Rocafuerte, 8 - 9, 1 - 75."]}

The large genus Heteragrion has a wide distribution in the Neotropics from southern Mexico to northern Argentina, occurring from sea level to 1800 m.a.s.l. In Colombia, so far ten species and two subspecies of the genus Heteragrion have been found; here we raise this number to 14, with three new records for the country (H. angustipenne Selys, 1886, H. flavidorsum Calvert, 1909 and H. valgum Donnelly, 1992), and the description of H. demarmelsi sp. nov. from Leticia Municipality, Amazonas Department. Also, the females of H. angustipenne and H. flavidorsum are described for the first time. Heteragrion peregrinum Williamson, 1919 is rediscovered and reported in new locations. Photographs of the main structures of taxonomic importance of males and females of all species of Heteragrion from Colombia are presented. Finally, we provide distribution maps, a taxonomic key (for males and females), and comments on the natural history of all Heteragrion species known from Colombia, are also included.

The female of Heteragrion icterops Selys, 1862, incompletely mentioned in 1886, is described, illustrated, keyed and diagnosed based on specimens collected in Pará State, North Brazil. We also provide an identification key and diagnostic comments on other two Group B females occurring in Brazil: H. angustipenne Selys, 1886 and H. bariai De Marmels, 1989. Heteragrion icterops females can be distinguished from other female congeners by having the genital valves tips leveling the posterior margin of S10 and by the morphology of the intersternites, presenting a well-developed dorsal plate and lacking a posterior plate.

The Neotropical forest specialist genus Heteragrion counts with 54 species and one subspecies described to date, eight of which have been recorded from Colombia. Here, information on Heteragrion species resulting from ten years of exploration of northwestern Colombia and examination of museum collections, including types and species from Central America, is presented. A new species endemic to the Tatamá National Park in the western Andes, Heteragrion tatama sp. nov. is described, as well as the female of Heteragrion aequatoriale Selys, 1886. Heteragrion calendulum Williamson, 1919 was rediscovered, a century after its first collection, which allowed us to compare it with Heteragrion atrolineatum Donnelly, 1992, and to conclude that the latter species is its junior synonym. We present pictures of female prothoracic intersternite, which offer valuable taxonomic information. The variation in coloration patterns for H. aequatoriale and Heteragrion mitratum Williamson, 1919 is discussed, and maps with new distributional data, a taxonomic key, natural history notes and photographs of the Heteragrion species distributed west of the Magdalena valley in Colombia, are also provided.

Oxystigma williamsoni Geijskes, 1976 is synonymized with Oxystigma petiolatum (Selys, 1862), based on a reexamination of an extensive series of both taxa identified by D. Geijskes in the RMNH. Illustrations of the variability for both taxa and illustrations, maps, and keys for all species are provided.