Bembecia turanica (Erschoff, 1874) (Lepidoptera: Sesiidae) – a new species of clearwing moths for the fauna of Russia

The description and illustrations of Bembecia turanica (Erschoff, 1874) are given. In order to stabilize the species epithet, fix the taxonomic status and the type locality of this least studied species of clearwing moths (Lepidoptera, Sesiidae) of the Palearctic, the neotype is designated herein. A detailed analysis of the external morphology, as well as the structure of the male genitalia, showed that this species is very close to B pallasi O. Gorbunov, 2020, but differs from it quite clearly in the colouration of some body parts and the structure of the transparent areas of the forewing. In addition, these two species have slight differences in the structure of the male genitalia. It has been shown that B. lavrovi Knyazev, 2025, recently described from the Omsk Region of Russia, is a junior subjective synonym of B. turanica: B. lavrovi Knyazev, 2025, syn. n. This synonymization points out that B. turanica is recorded for the first time for the Sesiidae fauna of Russia.