Taxonomic notes on Lasioglossum (Lasioglossum) subopacum (Smith) and L. (L.) okinawa Ebmer et Maeta (Hymenoptera, Halictidae) from Asia

Lasioglossum (Lasioglossum) subopacum (Smith) is recorded from the Korean Peninsula for the first time. Lasioglossum (L.) okinawa Ebmer et Maeta from Japan is ranked to a subspecies of L. (L.) subopacum judging from the characteristics of the male. The male of L. (L.) subopacum okinawa is described for the first time. Some bionomical notes of both subspecies are presented.