A checklist of the subfamily Mesochorinae (Hymenoptera, Ichneumonidae) from the Ukrainian Carpathians.

The distributional data on the Ukrainian Carpathian mesochorines are summarized. The list contains 64 species belonging to three genera. The genus Astiphromma Frster, 1869 numbering 14 species, of which A. albitarse (Brischke, 1880) and A. flagellator Riedel, 2015, are the first records for Ukraine. All three European species of the genus Cidaphus Frster, 1869 are distributed in the studied region and are the first records from the country. The genus Mesochorus Gravenhorst, 1829 is the most species-rich genus of the subfamily with 46 species found in the Ukrainian Carpathians, containing newly described M. (Mesochorus) genator sp. n. and 41 species recorded from the Ukrainian fauna for the first time. Taxonomic remarks and illustrations for most of the species are provided.