Grichanov I.Ya. 2025. A new species of Medetera Fischer von Waldheim, 1819 (Diptera: Dolichopodidae) from the North-Western Caucasus // Euroasian Entomological Journal. Vol.24. No.3: 169–172 [in English].
All-Russian Institute of Plant Protection, Podbelskogo Shosse 3, Saint-Petersburg, Pushkin 196608 Russia. E-mail: grichanov@mail.ru
doi 10.15298/euroasentj.24.03.06
ABSTRACT. A new species of long-legged fly Medetera volfovi Grichanov, sp.n. from the Russian Republic of Adygea is described and illustrated. The new species appears to be closely related to Medetera glaucella Kowarz, 1878, a member of the Palaearctic Medetera muralis species group, and differs from other species in the longer distal part of the wing vein M4, which is two (vs. 1.5) times as long as the transverse vein dm-m, and in the morphology of the hypopygium. The differently shaped epandrial lobes of the hypopygium in the new species may be a first in Palaearctic Medetera species, but are present in a few Nearctic species of the Holarctic Medetera petulca group. Species of the latter group differ from species of the Medetera muralis group in other characters, most notably in the presence of distinct setae on the middle tibia and the presence of a pair of strong bristles on the scutellum.
KEY WORDS: Medeterinae, Medetera, new species, Palaearctic Region, Russia, Adygea, Lago-Naki.