First record of Dryudella lineata Mocsáry, 1879 (Hymenoptera: Crabronidae) on the territory of Ukraine

Background. Dryudella sp. is a Holarctic genus, which includes 58 species. The majority of them, however, 29 species in particular, are common in Palearctic. On the territory of Ukraine the genus was represented by four species, collected in the Eastern, Southern and Central Ukraine. The biology of the genus has been insufficiently studied; its certain aspects having been studied only for a few representatives of the genus. Materials and Methods. A specimen of a wasp was captured with the help of an entomological net using the method of selective catching on the territory of the Hrabunske department of Nature Reserve “Rivnenskyi” (https://www.inaturalist.org/observations/250256988). The species of the wasp was identified using appropriate descriptions and keys. The biotope in which the wasp was captured was identified with the help of the National Catalogue of Biotopes of Ukraine. Results and Discussion. A new species of wasp of the genus Dryudella was registered in the territory of Ukraine – Dryudella lineata Mocsáry, 1879 of the family Crabronidae (Apoidea: Crabronidae: Astatinae). The specimen female D. lineata was captured in July 2024 in the territory of Nature Reserve “Rivnenskyi”, in a pine forest in a sandy area. D. lineata is a rare and scarce species of wasp. It has only been recorded in the territory of eight countries. Conclusions. First discovery of D. lineata in Ukraine, in particular in Nature Reserve “Rivnenskyi”. The sample was inventoried (E20 – 3375) and stored in the entomological collection of the Zoological Museum of the Ivan Franko National University of Lviv.