The genus Pentamerismus McGregor, 1949 currently contains 22 species with wide distributions (Mesa et al. 2009; Alatawi and Kamran 2015). Only four species of this genus are known in Ukraine: P. foliisetis (Livshits & Mitrofanov, 1967), P. juniperi (Reck, 1951), P. oregonensis (McGregor, 1949) and P. taxi (Haller, 1877). Three of these species have been recorded only in Crimea (Livschitz and Mitrofanov 1967; Mitrofanov and Strunkova 1979). However, P. taxi has been found on yew in Kyiv (Bondareva and Chumak 2018)...