A new species of the genus Synanthedon Hübner, 1819 (Lepidoptera: Sesiidae) from the European Russia

A new species, Synanthedon losmanovi, sp.n.from the Chuvash Republic and Moscow Oblast' in European Russia, is described and fi gured.Both externally and in the structure of the male genitalia, this new species seems to be the closest to Nearctic Synanthedon fatifera Hodges, 1963 and S. viburni Engelhardt, 1925, but superfi cially, it is very similar to the Palaearctic Conopia spheciformis ([Denis et Schiffermller], 1775), and Thamnosphecia pseudoscoliaeformis (patenka et Arita, 1992).The larval host plant and the features of their biology are unknown, but judging by the biotope where the typical specimens were collected, it may be Alnus glutinosa (L.) Gaerth.(Betulaceae).