Lasioglossum (Sphecodogastra) apristum ( Vachal, 1903 )

Murao, Ryuki, 2017, Bees of the Hemihalictus series of Lasioglossum Curtis (Hymenoptera, Halictidae) in South Korea, Zootaxa 4268 (4), pp. 451-488 : 468-469

Lasioglossum (Sphecodogastra) apristum ( Vachal, 1903)

Figs 1 E, 2C, 3A, 8F, 10A

Halictus apristus Vachal 1903: 130 [Holotype: Muséum National d’ Histoire Naturelle, Paris, France; ♀, type locality = Nikkon Moyen , env. De Tokio et Alpes de Nikko (on label), Japan] . Lectotype designation by Ebmer (1978b: 313) is unnecessary ( Pesenko 2007b: 101).

Sphecodes pallidulus Matsumura 1912: 209 [Syntype (s?): 1♀ in ELKU; ♀, type locality = Kumamoto, Japan, examined]. Synonymy by Ebmer (1978b: 313).

Lasioglossum (Evylaeus) apristum: Ebmer 1978b: 313 ; Ebmer 1995: 542, Figs 8–9 (♂), 63–64 (♂); Ebmer 2002: 840, Figs 60– 62 (♀); Murao & Tadauchi 2005: 43, Figs 1 , 2 , 3A –B, 4 (♀ ♂); Murao & Tadauchi 2007: 180, Figs 7, 8, 56A, 58A (♀ ♂), 240 (in key), 248 (in key).

Evylaeus (Evylaeus) apristus: Pesenko 2007b: 82 (in key), 87 (in key), 101, Figs 15–16 (♂).

Diagnosis. Female of this species is separated from other members of the apristum group by a combination of head and mesosoma with weak green-metallic luster and IS of mesoscutum with weak tessellation (sometimes nearly smooth in part) (IS = 3.5–5 d on medial to posterior area in maximum).

Specimens examined. (n = 170) [ South Korea] GW: 16♀, Mt. Gariwang-san, Jeongseon-gun, 30. vii. 2013 (R. Murao, cMur) ; 15♀, Bougmyong-ri , Dongsan-myon, Chunchon-gun, 22–23. v. 1992 (O. Tadauchi, ELKU) ; 1♀, Gamjong-ri , Dong-myon, Chunchon-gun, 21. v. 1992 (O. Tadauchi, ELKU) ; 1♀, Jansudae , Inje-gun, 17. iv. 1994 (O. Tadauchi, ELKU) ; 1♀, Mt. Odae-san , 27. iv. 1992 (O. Tadauchi, ELKU) ; 1♀, Ohsaenk-ri , Yangyang-gun, 17. iv. 1994 (O. Tadauchi, ELKU) ; 1♀, Doam-myon , Pyongchang-gun, 20. viii. 2001 (Y. Maeta, SULE) . GB: 1♀, Shinwon-ri , Unmun Chongdo-gun, 26–27. iv. 2003 (Y. Maeta, SULE) . JB: 1♀, Kyongyeo-myon , alt. 1300 m, Gurye-gun, 10. v. 1991 (O. Tadauchi, ELKU) . GN: 1♀, Tam-ri , 18. vii. 1991 (K. Kanmiya, ELKU) . JJ: 9♀, High resting area, Mt. Halla-san, alt. 1100 m, 26. iv. 1997 (O. Tadauchi & J.C. Paik, ELKU) ; 31♀, Kaewol bridge, Mt. Halla-san, 26. vii. 1990 (O. Tadauchi, ELKU) ; 10♂, Orimok-Haeandong , alt. 500–900 m, Jeju-si, 13. ix. 1998 (O. Tadauchi, ELKU) ; Yonsil , Mt. Halla-san, 26♀ 39♂, 24. vii. 1990 (O. Tadauchi, ELKU) , 13♀3♂, 27. vii. 1990 (O. Tadauchi, ELKU).

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

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

Flower records in South Korea. This species has been recorded visiting the following at least 11 plant species in seven families: Asteraceae : Aster yomena , Sonchus sp., Taraxacum spp. Cornaceae : Cornus sp. Caprifoliaceae : Lonicera sp. Oleaceae : Forsythia suspensa . Polygonaceae : Polygonum sp. Rosaceae : Armeniaca sp., Crataegus sp., Potentilla sp. Salicaceae : Salix spp.

Figures

FIGURE 1. A: fore wing of female. B – E: lateral habitus of four subgenera of Lasioglossum occurring in South Korea. A – B: L. (Acanthalictus) dybowskii (Radoszkowski). C: L. (Dialictus) miyabei Murao, Ebmer & Tadauchi. D: L. (Hemihalictus) transpositum (Cockerell). E: L. (Sphecodogastra) apristum (Vachal). A – E: ♀.

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 8. A – D: mesoscutum. E, F: distal part of metasomal sterna. A: Lasioglossum villosulum (Kirby). B: L. japonicum (Dalla Torre). C: L. transpositum (Cockerell). D: L. allodalum Ebmer & Sakagami. E: L. percrassiceps (Cockerell). F: L. apristum (Vachal). A – D: ♀. E, F: ♂.

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: ♂.