West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae) Prous, Marko Liston, Andrew Monckton, Spencer K. Kramp, Katja Vårdal, Hege Vikberg, Veli Heibo, Erik Mutanen, Marko European Journal of Taxonomy 2025 2025-02-27 977 1 377 Serville 1823 [702,861,265,291] Insecta Tenthredinidae Euura GBIF Animalia Hymenoptera 207 208 Arthropoda species vicina  Mostly defined based on genetic data. The species are also morphologically similar, but we have not found consistent morphological characters that define the group to the exclusion of other  Euura. Host plants are known for  E. vicina(  Rumex) and  E. notabilis(  Bistorta, this study). In addition, based on the sequencing of larval gut contents, a specimen (DEI-GISHym80076) from Primorsky Krai( Russia) had apparently fed on  Bistortasp.At this point it is not possible to say which species DEI-GISHym80076 could be, genetically it is closest to  E. putoniand  E. notabilis, but currently there is no genetic data for  E. nigerrima. Based on these host plant observations and the habitats where other species have been collected, it can be suggested that all species of the  vicinagroup are on Polygonaceae.