Lasioglossum (Lasioglossum) proximatum ( Smith, 1879 )

Murao, Ryuki, Lee, Heung-Sik & Tadauchi, Osamu, 2015, Bees of the Lasioglossum series (Hymenoptera: Halictidae) in South Korea, with an illustrated keys to species, Zootaxa 4044 (4), pp. 511-534 : 515-517

Lasioglossum (Lasioglossum) proximatum ( Smith, 1879)

Fig. 3 C

Halictus proximatus Smith 1879: 31 [Holotype: Natural History Museum, London, United Kingdom, ♀, type locality = Hakodate, Japan]; Cockerell 1909: 316 [in key]; Blüthgen 1925: 103 [♂].

Halictus discrepans Pérez 1905: 36 [Type series: Muséum National d’ Histoire Naturelle, Paris, France, ♀, type locality = Yokohama, Japan]. Synonymy by Sakagami & Tadauchi (1995: 187, with Ebmer’s personal communication). Lectotype [Muséum National d’ Histoire Naturelle, Paris, France] designated by Ebmer (1996: 272).

Halictus moltrechti Cockerell 1925: 2 , 4 [in key] [Holotype: U.S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA, ♀, type locality = Okeanskaja, Siberia (now Primorsk Terr., near Vladivostok), Russia]. Synonymy by Ebmer (1996: 272).

Halictus kraloffi Cockerell 1925: 3 , 4 [in key] [Holotype: U.S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA, ♀, type locality = Kongaus, Siberia (now Primorsk Terr.: Anisimovka), Russia]. Synonymy by Ebmer (1996: 272).

Halictus emelianoffi Cockerell 1925: 7 [Holotype: U.S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA, ♂, type locality = Okeanskaja, Siberia (now Primorsk Terr., near Vladivostok), Russia]. Synonymy by Ebmer (1996: 272).

Lasioglossum (Lophalictus) acuticrista Pesenko 1986: 126 [in key], 144 [Holotype: Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia, ♀, type locality = Promorsk Terr., Russia]. Synonymy by Sakagami & Tadauchi (1995: 187, with Ebmer’s personal communication).

Lasioglossum (Lophalictus) proximatum: Pesenko 2006 , 137 [♂, illustration], 138 [in key], 139 [♂, illustration], 143 [in key], 160–162.

Lasioglossum (Lasioglossum) proximatum: Sakagami & Maeta 1990 ; 53–54 [♀♂, illustration]; Sakagami & Tadauchi 1995: 187–189 [in a comparative notes of the description of L. ebmerianum Sakagami & Tadauchi 1995 ], 190 [♂, illustration]; Ebmer 1996: 273.

Diagnosis. This species is similar to L. sutshanicum Pesenko from eastern Asia. The female is separated from that of L. sutshanicum (male not examined in the present study) by the posterior surface of propodeum, which has a complete lateral carina extending to a transverse carina ( Fig. 3 C). In contrast, in the female of L. sutshanicum the lateral carina of the propodeum is incomplete and it does not extends to a transverse carina ( Fig. 3 D).

Specimens examined. (n = 134) [ South Korea] GW: Bougmyong-ri, Dongsan-myon, Chunchon-gun, 6♀, 26. iv. 1992 (T. Saigusa, ELKU), 6♀, 22–23. v. 1992 (O. Tadauchi, ELKU); 1♀, Dongsang-myon, Chunchon-gun, 16. iv. 1994 (O. Tadauchi, ELKU); 1♀, Gamjong-ri, Dong-myon, Chunchon-gun, 1♀, 21. v. 1992 (O. Tadauchi, ELKU), 1♂, Gamjong-ri, Dong-myon, Chunchon-gun, 23. vii. 1992 (K. Kanmiya, ELKU); 6♀, Jansudae, Injegun, 17. iv. 1994 (O. Tadauchi, ELKU); 1♀, Mt. Baekun-san, near Wonju, 8. vi. 2013 (O. Tadauchi, ELKU); 1♀, Soucho-myon, Wonju-gun, 20. iv. 1994 (O. Tadauchi, ELKU); 8♀, Taegwallyong, Myongju-gun, 19. iv. 1994 (O. Tadauchi, ELKU); Bukdaesa temple, Mt. Odae-san, Jinbumyeon, Pyeongchang-gun, 1♀, 31. v. 1998 (H.S. Lee, SNU), 1♀, 1. vi. 1998 (H.S. Lee, SNU), 1♀, 27. v. 2008 (H.S. Lee, QIA); 1♀, Jingogae, Mt. Odae-san, Pyeongchang, 31. v. 1995 (J.W. Kim, SNU), Mt. Cheontae-san, Hoengseong, 1♀, 29. v. 2009 (H.S. Lee, QIA), 2♀, 22. v. 2010 (H.S. Lee, QIA); 1♀, Mt. Gujeol-san, Hongcheon, 8. v. 1998 (SNU); 6♀, Mureung valley, Samhwasa, Samhwadong, Donghae, 12. vi. 2010 (H.S. Lee, QIA); 1♂, Mt. Jeombong-san, 29. viii. 1999 (H.T. Kim, SNU). Seoul: 1♀, Heoninreung grave, Gangnam, 21. iv. 1984 (H.S. Lee, QIA); 1♀, 13. v. 1990 (H.J. Kim, SNU). Incheon: 1♀, 27. v. 1982 (B.S. Choi, SNU); 1♀, Mt. Jeombong-san, 29. viii. 1999 (H.T. Kim, SNU). GG: Kwangnung, Pochon-gun, 3♀, 23–24. iv. 1992 (T. Saigusa & O. Tadauchi, ELKU), 13♀, 19. v. 1992 (O. Tadauchi, ELKU); Anyang arboretum, Anyang-si, 1♀, 27. iv. 1989 (C.H. Jeong, SNU), 1♀, 8. v. 1990 (SNU); Aroboretum, Suwon, 1♀, 12. v. 1995 (H.R. Yi, SNU), 1♀, 20. v. 1998 (H.T. Kim, SNU), 1♀, 12. v. 1999 (H.T. Kim, SNU), 2♀, 16. v. 1999 (H.T. Kim, SNU), 3♀, 20. v. 1999 (H.T. Kim, SNU); 1♀, Baeneomi gogae, Seolmaejae, Yangpyeong, 15. v. 2010 (H.A. Lee, QIA); 1♀, Bundang central park, Seongnam, 7. vii. 1997 (J.H. Kim, SNU); CALS, Suwon, 1♀, 30. iv. 1995 (E.G. Cho, SNU), 2♀, 12. v. 1995 (J.Y. Choi & Y.S. Son, SNU), 2♀, 23. v. 1995 (D.R. Seo, SNU), 1♀, 26. v. 1995 (S.H. Choi, SNU), 1♀, 7. vi. 1995 (S.G. Park, SNU); 1♀, Geumgok farm, Suwon, 1. v. 1999 (H.T. Kim, SNU); 1♀, Gwangreung Pocheon, 6. x. 1973 (Y.R. Jeong, SNU); 2♀, Kwangju, 19. v. 1990 (H.J. Kim, SNU); 1♀, Mirinae , Anseong, 11. v. 1996 (H.K. Shin, SNU); 1♀, Mt. Cheonggye-san, 5. v. 1992 (J.W. Kim, SNU); Mt. Gwanggyo-san, Suwon, 1♀, 21. v. 1990 (SNU), 1♀, 21. v. 1990 (SNU), 1♀, 23. v. 1990 (J.M. Choi, SNU); 1♀, Mt. Soyo-san, 11. vi. 1995 (H.S. Lee, SNU); 1♀, Mt. Taehwa-san, 6. v. 1999 (H.T. Kim, SNU); 1♀, Seoul grand park, Gwacheon, 24. v. 1990 (S.K. Son, SNU); 1♀, Suridong, Gunpo-si, 9. v. 2009 (H.S. Lee, QIA); 1♀, Surisan, Anyang, 9. v. 2010 (H.S. Lee, QIA); 2♀, Suwon, 1. v. 1977 (G.H. Jo, SNU); 1♀, Weoncheon, Suwon, 25. v. 1990 (J.M. Choi, SNU). JB: 2♀, Simwon valley, Sannae-myon, Namweon-gun, 29. iv. 1992 (T. Saigusa, ELKU); 1♀, Nogodan, Mt. Jiri-san, 29. vii. 1999 (D.J. Im, SNU). GN: Samjeon-ri, Macheong-myon, Hamyang-gun, 2♀, 11. v. 1991 (T. Saigusa & O.Tadauchi, ELKU), 1♀, 1. v. 1992 (T. Saigusa, ELKU); 1♀, Geumsan, Namhae, 22. vii. 1994 (J.H. Lee, SNU). JN: 1♀, Chusan, Gwangyang-si, 23. vi. 1995 (H.R. Yi, SNU); 1♀, Dabgok, Mt. Baekun-san, Gwangyang-si, 26. vi. 1986 (S.M. Hwang, SNU); 6♀, Piagol, Mt. Jiri-san, 22. v. 1999 (H.T. Kim, SNU). JJ: 7♀, High resting area, Mt. Halla-san, alt. 1100 m, 26. iv. 1997 (J.-c. Paik & O. Tadauchi, ELKU); 5♀, Mt. Halla-san, alt. 300–550 m, Haean-dong, 26. iv. 1997 (J.-c. Paik & O. Tadauchi, ELKU); 1♀, Ora-dong, Jeju-shi, 4. iv. 1998 (O. Tadauchi, ELKU); 1♀, Pijarim Forests, Pukjeju-gun, 24. iv. 1997 (O. Tadauchi, ELKU).

FIGURE 2. A, C: mesoscutum. B, D: T1. E, F: propodeum. A, B: Lasioglossum subopacum (Smith) . C, D: L. nipponicola Sakagami & Tadauchi. E : L. exiliceps (Vachal) . F: L. denticolle (Morawitz) . A–F: ♀.

Distribution. North Korea, South Korea, Japan, China, Russian Far East. Murao et al. (2014) listed this species only from North Korea, but Ebmer (1996) also recorded it from South Korea.

Flight period in South Korea. Female: April to October. Male: July to August. In Japan, male flies from August to September (Murao 2014).

Flower records in South Korea. This species has been recorded from at least 14 plant species in 12 families, as follows: Asteraceae : Taraxacum sp. Brassicaceae : Brassica spp. Caryophyllaceae : Sagina japonica (Sw.) Ohwi. Ericaceae : Rhododendron spp. Fabaceae : Amorpha sp. Geraniaceae : Geranium thunbergii Siebold ex Lindl. & Paxton. Lardizabalaceae : Akebia quinata (Houtt.) Decne. Oleaceae : Forsythia suspensa (Thunb.) Vahl. Rhamnaceae : Rhamnus davurica Pall. Rosaceae : Malus toringo (Siebold) Siebold ex Vriese ; Pourthiaea villosa (Thub.) Decne. var. villosa . Salicaceae : Salix sp. Styracaceae : Styrax japonica Siebold & Zucc. ; S. obassia Siebold & Zucc.

Figures

FIGURE 3. A, B: metapostnotum of propodeum. C, D: propodeum. E, F: supraclypeus. A: Lasioglossum exiliceps (Vachal). B, E: L. primavera Sakagami & Maeta. C: L. proximatum (Smith). D, F: L. sutshanicum Pesenko. A – F: ♀.