Diversity of the genus Eumerus Meigen (Diptera, Syrphidae) on the eastern Mediterranean islands with description of three new species

摘要

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 Grkovic, Vujic & Radenkovic n. sp. from Lesvos, Samos, Rhodes islands (Greece) and Bozdag mountain (Turkey), E. torsicus Grkovic & Vujic n. sp. from Chios Island (Greece) and Cyprus; E. crassus Grkovic, Vujic & Radenkovic 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.