Eur. J. Entomol. 118: 368-393, 2021 | DOI: 10.14411/eje.2021.039

Taxonomic revision of the highly threatened Eumerus tricolor species group (Diptera: Syrphidae) in Southeast Europe, with insights into the conservation of the genus EumerusOriginal article

Ana GRKOVIĆ ORCID...1, Jeroen VAN STEENIS ORCID...2, Marija MILIČIĆ ORCID...3, 4, Nataša KOČIŠ TUBIĆ ORCID...1, Mihajla DJAN ORCID...1, Snežana RADENKOVIĆ ORCID...1, Ante VUJIĆ ORCID...1
1 University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia; e-mails: ana.grkovic@dbe.uns.ac.rs, natasa.kocis@dbe.uns.ac.rs, mihajla.djan@dbe.uns.ac.rs, ante.vujic@dbe.uns.ac.rs, snezana.radenkovic@dbe.uns.ac.rs
2 Naturalis Biodiversity Center, Leiden, ℅ Hof der Toekomst 48, 3823 HX Amersfoort, The Netherlands; e-mail: jvansteenis@syrphidaeintrees.com
3 Laboratory for Biosystems Research, BioSense Institute - Research Institute for Information Technologies in Biosystems, University of Novi Sad, Dr. Zorana Đinđića 1, 21000 Novi Sad, Serbia; e-mail: marija.milicic@biosense.rs
4 LIBRe - Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland

The diversity in the Eumerus tricolor group, the largest group within the genus in Southeast Europe, is investigated. Two new, locally distributed species are described, E. crispus Vujić & Grković, sp. n. from Serbia and E. nigrorufus Grković & Vujić, sp. n. from Montenegro. In addition to Southeast European members, one related species E. arctus van Steenis, sp. n. is described from Switzerland. We designate lectotypes for E. ovatus Loew, 1848, E. tarsalis Loew, 1848, E. tricolor (Fabricius, 1798) and E. varius Meigen, 1822. A map of the distribution of members of the E. tricolor group in Southeast Europe is provided. In addition, records from other parts of Europe are listed and an illustrated identification key to the SE European species of the E. tricolor group provided. We also study and discuss the significance of small habitat patches for the preservation of species of Eumerus, because the three species described in this paper are currently known from such patches.

Keywords: Diptera, Syrphidae, Eumerus tricolor group, COI gene, hoverfly diversity, identification key, new species, lectotype, small habitats, national park, taxonomic revision

Received: April 29, 2021; Revised: October 29, 2021; Accepted: October 29, 2021; Published online: December 6, 2021  Show citation

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GRKOVIĆ, A., VAN STEENIS, J., MILIČIĆ, M., KOČIŠ TUBIĆ, N., DJAN, M., RADENKOVIĆ, S., & VUJIĆ, A. (2021). Taxonomic revision of the highly threatened Eumerus tricolor species group (Diptera: Syrphidae) in Southeast Europe, with insights into the conservation of the genus Eumerus. EJE, 118, Article 368-393. https://doi.org/10.14411/eje.2021.039
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