Lasioglossum (Sphecodogastra) subfulvicorne subfulvicorne ( Blüthgen, 1934 ), Bluthgen, 1934

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

Lasioglossum (Sphecodogastra) subfulvicorne subfulvicorne ( Blüthgen, 1934)

Figs 4F , 5B , 9A, 9 C, 9F

Halictus subfulvicornis Blüthgen 1934: 11 [Holotype: Naturhistoriska Riksmuseet , Stockholm, Sweden; ♂, type locality = Lupa-sze, 80 km, N Minshan].

Lasioglossum (Evylaeus) subfulvicorne subfulvicorne: Svensson et al. 1977: 222 , Figs 15–17 (♂); Ebmer 1982: 213, Photo 4 in Taf. II (♀); Ebmer 1988: 610, Figs 21–22, 24–25, 27–29 (♂); Ebmer 1995: 573; Ebmer 1996: 281; Ebmer 2005: 374. Evylaeus (Fratevylaeus) subfulicornis subfulvicornis: Pesenko 2007b: 83 (in key), 89 (in key), 106, Figs 59–61 (♂).

Diagnosis. This species is similar to L. fratellum (Pérez) from Europe to eastern Asia (the nominotypical subspecies from Europe to eastern Siberia, and the ssp. betulae Ebmer from eastern Asia). It is separated from L. fratellum by the following character states: head nearly as long as wide in both sexes; disc of female T2 with silkydull luster and distinct lineolattion; and ventral retrorse lobe of male genitalia small, flat, narrowly triangular, and pointed at apex. In contrast, L. fratellum has the head egg-shaped in both sexes (length/width ratio 1.05–1.1); disc of female T2 nearly polished on most part; and ventral retrorse lobe of male genitalia large, relatively broad, elongate elliptical, narrowed subapically, at apex curved backward or posteroventrad at acute angle ( Pesenko 2007b).

Specimens examined. (n = 39) [ South Korea] GW: 3♂, Mt. Gariwang-san, Jeongseon-gun, 30. vii. 2013 (R. Murao, ELKU) ; 8♀, Mt. Odae-san , alt. 900 m, 9. vi. 2013 (O. Tadauchi, ELKU) ; 1♀, Doam-myon , Pyongchanggun, 20. viii. 2001 (Y. Maeta, cMur). JB : 1♀, Sanlyong-ri , Sannae-myon, Namweon-gun, 29. iv. 1992 (O. Tadauchi, ELKU) ; 1♀, Jeonglyongchy , Sannae-myon, Namweon-gun, 14. v. 1991 (T. Saigusa, ELKU) . GN: Samjeong-ri , Macheong-myon, Hamyang-gun, 5♀, 11. v. 1991 (K. Morimoto & O. Tadauchi, ELKU) , 6♀, 15. v. 1991 (O. Tadauchi, ELKU). JN: 1♀, Simwon valley , Sannae-myon, Namweon-gun, 13. v. 1991 (O. Tadauchi, ELKU) . JJ: Yonsil , Mt. Halla-san, 2♀, 24. vii. 1990 (O. Tadauchi, ELKU) , 6♂, 25. vii. 1990 (O. Tadauchi, ELKU), 1♂, 27. vii. 1990 (O. Tadauchi, ELKU); 3♀ 1♂, Mt. Halla-san , alt. 1400–1500 m, 25. vii. 1990 (O. Tadauchi, ELKU) .

Distribution. North Korea, South Korea (new record), Eastern Siberia, Russian Far East, Mongolia, China.

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

Flower records in South Korea. Sisymbrium luteum (Brassicaceae) , Syringa sp. ( Oleaceae ).

Figures

FIGURE 4. A – F: inner hind tibial spur. A: L. affine (Smith). B: L. albipes villosum Ebmer. C: L. calceatum (Scopoli). D: L. nipponense (Hirashima). E: L. baleicum (Cockerell) or L. vulsum (Vachal). F: L. subfulvicorne subfulvicorne (Blüthgen). A – F: ♀. Scale bars: 0.2 mm.

FIGURE 5. A – E: mesoscutum. A: Lasioglossum laevoides Ebmer. B: L. subfulvicorne subfulvicorne (Blüthgen). C: L. vulsum (Vachal). D: L. nipponense (Hirashima). E: L. albipes villosum Ebmer. A – E: ♀.

FIGURE 9. A, B: posterior surface of propodeum. C, D: genitalia (C, ventral view; D: lateral view). E, F: mesoscutellum. A, C, F: Lasioglossum subfulvicorne subfulvicorne (Blüthgen). B: L. transpositum (Cockerell). D: L. duplex (Dalla Torre). E: L. vulsum (Vachal). A – F: ♂.