Mesochorus (Mesochorus) thomsonii Dalla Torre, 1901 (Fig. 8)

syn. Mesochorus nigriceps Thomson, 1886, preoccupied.

Material examined. UKRAINE: Ivano-Frankivsk Region: 1 ♂, Gorgany, pol. Playek, 1200 m, 48°36‘42.77“N, 24° 09‘10.69“E, sweeping, 11.v.2013 ; Transcarpathian Region: 3 ♀♀, 6.5 km N of Mala Ugolka, 48.153958°N, 23.370084°E, 750 m, beech forest, Malaise trap 6, 12–31.v.2015, leg. O. Varga (SIZK) .

Distribution. Europe; first record for Ukraine.

Taxonomical remark. This species has been usually synonymized with Mesochorus punctipleuris in the past (Horstmann 2002: 87), but was recently re-established as a separate species (Riedel & Kolarov 2021). It differs from M. punctipleuris by the longer and sharper teeth of the hind tarsal claw; brown to blackish mid coxa; infuscate basally and apically hind tibia; and longer ovipositor sheath (1.00–1.05× as long as hind metatarsus).