Lasioglossum (Dialictus) virideglaucum Ebmer & Sakagami, 1994

Lasioglossum (Evylaeus) virideglaucum Ebmer & Sakagami, in Ebmer et al. 1994: 27 [Holotype: Andreas Werner Ebmer’s collection, Linz, Austria, ♂, type locality = Heishu, Yunnan Prov., China]; Ebmer 2002: 864; Ebmer 2006: 564; Murao et al. 2006: Fig. 12D (♂) ; Murao & Tadauchi 2008a: Fig. 2 D, F, I (♂) .

Evylaeus (Glauchalictus) virideglaucus: Pesenko 2007a: 26; Pesenko 2007b: 85 (in key), 99 (in key), 115, Figs 113–116 (♂). Lasioglossum (Dialictus) virideglaucum: Murao et al. 2015a: 18, 44–45 (in key), Figs 8–9, 24B (♀♂).

Diagnosis. Male of this species is separated from other members of the atroglaucum group by a combination of the following character states: disc of S4 with short and moderately dense hairs; S5 with apical depression and without brush-like hairs; S6 with a pair of thin hair tufts; and the gonostylus of genitalia nearly rounded on top, and without setae on the inner surface (Murao et al. 2015a). Female of this species cannot be clearly separated from the related species (Ebmer 2006; Pesenko 2007b; Murao et al. 2015a).

Distribution. South Korea, Russian Far East, China, Japan.

Flight period in South Korea. Male: July to September. According to Murao et al. (2015a), females are collected from April to September in Kyushu, western Japan.

Flower records in South Korea. This species have been recorded visiting the following 4 species in 4 families: Brassica napus (Brassicaceae), Cimicifuga simplex (Ranunculaceae), Isodon inflexus (Lamiaceae), and Persicaria sp. ( Polygonaceae).