Lasioglossum (Sphecodogastra) sibiriacum ( Blüthgen, 1923 ), Bluthgen, 1923

Murao, Ryuki, 2017, Bees of the Hemihalictus series of Lasioglossum Curtis (Hymenoptera, Halictidae) in South Korea, Zootaxa 4268 (4), pp. 451-488 : 476-477

Lasioglossum (Sphecodogastra) sibiriacum ( Blüthgen, 1923)

Fig. 3 D

Halictus sibiriacus Blüthgen 1923: 327 [Holotype: Institute of Systematic and Experimental Zoology, Polish Academy of Sciences, Krakow, Poland; ♀, type locality = Ostsiberien (no locality)]; Blüthgen 1924: 87 (in key).

Halictus solovieffi Cockerell 1925: 4 [Holotype: U. S. National Museum of Natural History, Smithsonian Institution, Washington, D.C., USA; ♀, type locality = Kongaus (now Anisimovka, Primorsk Terr.), Russia]. Synonymy by Ebmer (1978a: 202).

Lasioglossum (Evylaeus) sibiriacum: Ebmer 1978a: 202 ; Ebmer 1995: 571; Sakagami et al. 1994: 11, Figs 2 , 11 , 14, 21 (♀♂); Murao & Tadauchi, 2007: 229 –233, 241, 248, Figs 47–49, 57H, 59H (♀♂).

Evylaeus (Fratevylaeus) sibiriacus: Pesenko 2007b: 83 (in key), 89 (in key), 106, Figs 56–58 (♂).

Diagnosis. This species is easily separated from other members of the fulvicorne - fratellum group occurring in eastern Asia by a combination of the following character states: male clypeus with a yellow spot on lower half; mesoscutum with coarse reticulate PP on anterior half in both sexes; metapostnotum short, nearly as log as metanotum in both sexes; and the disc of T1 with distinct dense fine PP in both sexes.

Specimens examined. (n = 83) [ South Korea] GW: Bougmyong-ri , Dongsan-myon, Chunchon-gun, 6♀, 26. iv. 1992 (O. Tadauchi, ELKU) , 14♀, 21. vii. 1992 (K. Morimoto, ELKU); Gamjong-ri , Dong-myon, Chunchongun, 2♀, 25. iv. 1992 (T. Saigusa, ELKU) , 1♀, 21. v. 1992 (O. Tadauchi, ELKU), 5♀, 23. vii. 1992 (K. Morimoto & K. Kanmiya, ELKU); 1♂, Hongcheon, 5–6. ix. 1984 (K. Morimoto, ELKU); 2♀, Jansudae, Inje-gun, 17. iv. 1994 (O. Tadauchi, ELKU); 23♀, Ogari, Seon-myon, Yangyang-gun, 27. iv. 1992 (O. Tadauchi, ELKU); 1♀, Pupan-myon, Hongcheon-gun, 20. v. 1992 (O. Tadauchi, ELKU); 1♀, Taegwallyong, Myongju-gun, 19. iv. 1994 (O. Tadauchi, ELKU). GG: 21♀, Kwangnung, Pochon-gun, 16–19. vii. 1992 (K. Morimoto & K. Kanmiya, ELKU). JB: 1♀, Jeonglyongchy, Sannae-myon, Namweon-gun, 14. v. 1991 (O. Tadauchi, ELKU); 1♀, Sanlyongri, Sannae-myon, Namweon-gun, 2. v. 1992 (O. Tadauchi, ELKU). GN: Samjeon-ri , Macheong-myon, Hamyanggun, 3♀, 9–11. v. 1991 (O. Tadauchi, ELKU) , 1♀, 1. v. 1992 (O. Tadauchi, ELKU).

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

Flight period in South Korea. Female: April to July. Male: September.

Flower records in South Korea. This species has been recorded visiting the following at least seven plant species in five families: Brassicaceae : Brassica spp.; Capsella sp. Papareraceae: Chelidonium sp. Rosaceae : Armeniaca sp.; Potentilla sp. Salicaceae : Salix sp. Staphyleaceae : Staphylea sp.

Figures

FIGURE 2. A, B: body color of head and mesosoma. C, D, F: mesepisternum. E: pronotum in lateral view. A: Lasioglossum ellipticeps (Blüthgen). B: L. calceatum (Scopoli). C: L. apristum (Vachal). D: L. miyabei Murao, Ebmer & Tadauchi. E, F: L. percrassiceps (Cockerell). A – F: ♀.

FIGURE 3. A: pronotum in lateral view. B, C: posterior surface of propodeum. D, E: posterior area of mesoscutum. A: Lasioglossum apristum (Vachal). B: L. affine (Smith). C: L. transpositum (Cockerell). D: L. sibiriacum (Blüthgen). E: L. hoffmanni (Strand). A – E: ♀.

FIGURE 11. A, B: clypeus. C, D: metasomal sterna. A: Lasioglossum sakagamii Ebmer. B, D: L. villosulum (Kirby). C: L. japonicum (Dalla Torre). A – D: ♂.