51. L. (Chthonolasius) umbratus (Nylander, 1846)

Distribution: E.G.: Tbilisi (Mushtaidi Garden) (Ruzsky, 1902; Jijilashvili, 1964b); S.G.: Bogdnovka, Borjomi, Daba, Khanchali Lake (Ruzsky, 1902, 1905; Jijilashvili, 1967a, 1974a).