Eur. J. Entomol. 122: 13-34, 2025 | DOI: 10.14411/eje.2025.003

Diversity and systematics of the Ibero-Balearic Eumerus (Diptera: Syrphidae): Providing tools for species identificationOriginal article

Pablo AGUADO-ARANDA ORCID...1, Antonio RICARTE ORCID...1, Zorica NEDELJKOVIÆ ORCID...1, Scott KELSO ORCID...2, Jeffrey H. SKEVINGTON ORCID...3, María Ángeles MARCOS-GARCÍA ORCID...1
1 Research Institute CIBIO ('Centro Iberoamericano de la Biodiversidad'), Science Park, University of Alicante, Ctra. San Vicente del Raspeig s/n. 03690 - San Vicente del Raspeig (Alicante), Spain; e-mails: pablo.aguado@ua.es, ricarte24@gmail.com, zoricaned14@gmail.com, marcos@ua.es
2 Canadian National Collection of Insects, Arachnids and Nematodes, Agriculture and Agri-Food Canada, K.W. Neatby Building, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada; e-mail: scott.kelso@agr.gc.ca
3 Carleton University, 1125 Colonel By Drive, Department of Biology, Ottawa, ON, K1S 5BS, Canada; e-mail: jhskevington@gmail.com

The syrphid genus Eumerus Meigen, 1822 is one of the most speciose in the world. In the Ibero-Balearic area (including Andorra and the Spanish side of the Pyrenees), recent taxonomic studies have increased the knowledge of Eumerus in Europe. A high taxonomic diversity together with a complex morphology make species identification difficult in this genus. The lack of updated and comprehensive tools to assist in the identification of species prompted the production of a dichotomous key to all Ibero-Balearic species of Eumerus and generation of DNA barcodes for ten species. In summary, a total of 37 species of Eumerus and nine species groups are reported in this geographical region. Eumerus caballeroi Gil Collado, 1929 is proposed as junior synonym of Eumerus nudus Loew, 1848 and the taxonomic status of Eumerus pauper Becker, 1921 is discussed. The first sequences of the 5´ region of the Cytochrome c oxidase subunit I gene (COI-5´) of Eumerus subornatus Claußen, 1989 and Eumerus truncatus Rondani, 1868 were obtained and their systematic positions corroborated.

Keywords: Hoverfly, Merodontini, Spain, Portugal, identification key, DNA barcode

Received: November 15, 2024; Revised: January 8, 2025; Accepted: January 8, 2025; Published online: January 29, 2025  Show citation

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AGUADO-ARANDA, P., RICARTE, A., NEDELJKOVIÆ, Z., KELSO, S., SKEVINGTON, J.H., & MARCOS-GARCÍA, M.Á. (2025). Diversity and systematics of the Ibero-Balearic Eumerus (Diptera: Syrphidae): Providing tools for species identification. EJE, 122, Article 13-34. https://doi.org/10.14411/eje.2025.003
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