The bee family Halictidae (Hymenoptera, Apoidea) from Central Asia collected by the Kyushu and Shimane Universities Expeditions.

Background: Central Asia is one of the important centers of bee diversity in the Palearctic Region. However, there is insufficient information for many taxa in the central Asian bee fauna. The Kyushu and Shimane Universities (Japan) Expeditions to Kazakhstan, Kyrgyzstan, Uzbekistan, and Xinjiang Uyghur of China were conducted in the years 2000 to 2004 and 2012 to 2014.

Bees of the Hemihalictus series of Lasioglossum Curtis (Hymenoptera, Halictidae) in South Korea.

The South Korean fauna of the Hemihalictus series belonging to the genus Lasioglossum Curtis are reviewed. Twenty-seven species are recognized for the country. Lasioglossum laevoides Ebmer is recorded from the Korean Peninsula for the first time.

Bees of the Lasioglossum series (Hymenoptera: Halictidae) in South Korea, with an illustrated keys to species.

The South Korean fauna of the bee genus Lasioglossum Curtis (Halictidae: Halictini) belonging to the Lasioglossum series (i.e., those with the second submarginal crossvein strong) are reviewed.

Seladonia (Pachyceble) henanensis sp. n. (Hymenoptera, Halictidae) from China.

Seladonia (Pachyceble) henanensis sp. n., is described from Henan Province, the eastern-central part of China.

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 (Lasioglossum) okinawa Ebmer et Maeta from Japan is ranked to a subspecies of Lasioglossum (Lasioglossum) subopacum judging from the characteristics of the male. The male of Lasioglossum (Lasioglossum) subopacumokinawa is described for the first time.