Updated checklist of hover flies (Diptera: Syrphidae) of the Azores archipelago with taxonomic notes and the description of a new species, Eristalis azorensis sp. nov.
Bot Sander, Hofstee Lenze, Mengual Ximo
Acta Entomologica Musei Nationalis Pragae 65(1): 215-232, 2025
Published online: 18th September 2025
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Abstract: We report the results of a field expedition to the Azores archipelago. A total
of 13 species of hover flies were collected, including several species new to
certain islands of the archipelago. The records of the expedition are
supplemented with new island records found on iNaturalist and observation.org
websites. A species new to science, Eristalis (Eoseristalis) azorensis sp.
nov., was collected in our survey and is described here in full. DNA barcodes of
this species were sequenced and compared to other European species of the genus.
The new species was restricted to the mountainous region on the western side of
São Miguel Island. Furthermore, we provide identification tools for the new
species, as well as for Palaearctic species of Xanthandrus Verrall, 1901,
including the endemic Macaronesian taxa. Our findings raise the total number of
the Azorean hover fly fauna to 24 species.
Key words: Diptera, Syrphidae, Eristalis, Xanthandrus, hover flies, DNA barcoding, endemism, faunistics, identification key, new species, Azores archipelago
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