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Eumerus alpinus Rondani, 1857. Regions: GO, LC. Reference: Van Steenis et al. (2013) (as Eumerus olivaceus)., Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 200, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/7993180, {"references":["Van Steenis, W., De Groot, M. & Van Steenis, J. (2013) New data on the hoverflies (Diptera: Syrphidae) of Slovenia. Acta Entomologica Slovenica, 21 (2), 131 - 162."]}

Eumerus alpinus Rondani, 1857 ORIGINAL DESCRIPTION: 1857: 86 (key), 91 (description). TYPE LOCALITY: “ in alpibus pedemontanis [Piedmont (Italy) Alps]”. TYPE MATERIAL: 1 ♂, syntype (missing head, covered with mold) (MZUF: Box 4): Eumerus Mgn / alpinus Bellardi / 131; 1 ♂, syntype (MZUF: Box 4): Eumerus Mgn / alpinus Bellardi / 131 / [illegible label]; 1 ♂, syntype (MRSN: Box 53): E. alpinus Bell., Alpi ♂ / Eumerus nudus Loew, 1848 det. Sommaggio 2002, ♂; 1 ♂, syntype (MRSN: Box 53): E. alpinus Bell., Alpi ♂ / 28-68 / Eumerus nudus Loew, 1848 det. Sommaggio 2002, ♂; 2 ♂♂, syntypes (MRSN: Box 53): E. alpinus Bell., Alpi ♂ / [illegible label] / Eumerus nudus Loew, 1848 det. Sommaggio 2002, ♂. CURRENT STATUS: junior synonym of Eumerus olivaceus Loew, 1848 (Peck 1988: 160, Belcari et al. 1995a: 15); valid species (Grković et al. 2015: 364). REMARKS: Rondani (1857: 91) described Eumerus alpinus from just the male sex, giving a single measurement of length, despite there being six specimens in the type series found in this study: “ Marem speciei … captum semel mihi Prof. Bellardi misit [Prof. Bellardi sent me the male of the species collected once]”. Rondani attributed the species name to Bellardi. We found six male syntypes in this study. Sommaggio (2007: 123) incorrectly considered three female specimens in the MRSN as syntypes. Grković et al. (2015: 364) incorrectly stated that only one male is preserved in the MZUF and considered it as the holotype., Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 247, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621, {"references":["Rondani, C. (1857) Dipterologiae italicae prodromus. Vol: II. Species italicae ordinis dipterorum in genera characteribus definita, ordinatim collectae, methodo analitica distinctae, et novis vel minus cognitis descriptis. Pars prima. Oestridae: Syrphfidae [sic!]: Conopidae. A. Stocchi, Parmae [= Parma], 264 pp., 1 pl. https: // doi. org / 10.5962 / bhl. title. 8160","Loew, H. (1848) Eine neue europaische Art der Gattung Metopia. Entomologische Zeitung, 9, 377 - 378.","Sommaggio, D. (2002) Paragus gorgus Vujic & Radenkovic, 1999: a junior synonym of P. majoranae Rondani, 1857, and reinstatement of P. pecchiolii Rondani, 1857 (Diptera, Syrphidae). Volucella, 6, 53 - 56.","Peck, L. V. (1988) Family Syrphidae. In: Soos, A. & Papp, L. (Eds.), Catalogue of Palaearctic Diptera. Volume 8. Syrphidae - Conopidae. Elsevier Science Publishers, Amsterdam & Akademiai Kiado, Budapest, pp. 11 - 230.","Belcari, A., Daccordi, M., Kozanek, M., Munari, L., Raspi, A. & Rivosecchi, L. (1995 a) Diptera Platypezoidea, Syrphoidea. In: Minelli, A., Ruffo, S. & La Posta, S. (Eds.), Checklist delle specie della fauna italiana. 70. Calderini, Bologna, pp. 1 - 25.","Grkovic, A., Vujic, A., Radenkovic S., Chroni, A. & Petanidou, T. (2015) Diversity of the genus Eumerus Meigen (Diptera, Syrphidae) on the eastern Mediterranean islands with description of three new species. Annales de la Societe Entomologique de France, New Series, 51 (4), 361 - 373. https: // doi. org / 10.1080 / 00379271.2016.1144483","Sommaggio, D. (2007) Revision of Diptera Syrphidae in Bellardi's Collection, Turin. Bollettino del Museo Regionale di Scienze Naturali di Torino, 24 (1), 121 - 158."]}

A list of 25 species of the genus Eumerus Meigen (Diptera: Syrphidae) from the eastern Mediterranean islands is presented. Descriptions are given for three new species: Eumerus aurofinis Grković, Vujić & Radenković n. sp. from Lesvos, Samos, Rhodes islands (Greece) and Bozdağ mountain (Turkey), E. torsicus Grković & Vujić n. sp. from Chios Island (Greece) and Cyprus; E. crassus Grković, Vujić & Radenković n. sp. from Lesvos Island (Greece). In addition to classical morphological characters, mitochondrial COI barcode sequences were generated for several specimens of two available taxa. The status of Eumerus alpinus Rondani, 1857 is revised, and the taxon is resurrected from synonymy of E. olivaceus Loew, 1848. The zoogeographical significance of the described endemic taxa to the biodiversity of the Aegean islands is discussed.