Lasioglossum (Lasioglossum) exiliceps ( Vachal, 1903 )

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 : 513-515

Lasioglossum (Lasioglossum) exiliceps ( Vachal, 1903)

Figs. 1A –B, 2E, 3A

Halictus exiliceps Vachal 1903: 129 [Type series: Muséum National d’ Histoire Naturelle, Paris, France, ♀, type locality = Tokyo, Japan].

Lasioglossum (Lasioglossum) exiliceps: Pesenko 1986: 130 [in key]; Ebmer 1996: 271 [Lectotype designated: Muséum National d’ Histoire Naturelle, Paris, France]; Sakagami & Tadauchi 1995: 187 –189 [♀♂, in a comparative notes of the description of L. ebmerianum Sakagami & Tadauchi, 1995 ]; Pesenko 2006: 138 [in key], 146–147; Ebmer 2006: 549, 584– 585 [♂, photograph and illustration].

Diagnosis. This species is similar to L. eos Ebmer and L. leviventre (Pérez) from eastern Asia. It is separated from both species by the female metapostnotum dull with distinct tessellation among ridges ( Fig. 3A ) and the gonostylus of male genitalia acuminate ( Ebmer 2006, Fig. 12).

In contrast, the female metapostnotum in both L. eos and L. leviventre shiny without tessellation among ridges and the gonostylus elongate in L. eos and club-shaped in L. leviventre ( Ebmer 1978a, Fig. 6 in L. eos ; Ebmer 2006, Fig. 15 in L. leviventre ).

Specimens examined. (n = 477) [ South Korea] GW: 4♀, Myeongwol-ri, Seo-myeon, Chuncheon-shi, 20. iv. 2002 (Y. Maeta, SULE); 2♀, Seongdong-ri, Bukbang-myon, Hongcheon-gun, 19. iv. 2002 (Y. Maeta, SULE); Bougmyong-ri, Dongsan-myon, Chunchon-gun, 1♀, 24. iv. 1992 (O. Tadauchi, ELKU), 4♀, 22–23. v. 1992 (O. Tadauchi, ELKU), 3♀, 26. iv. 1992 (T. Saigusa & O. Tadauchi, ELKU); Dongsang-myon, Chunchon-gun, 8♀, 16. iv. 1994 (O. Tadauchi, ELKU), 2♀, 20. iv. 1994 (O. Tadauchi, ELKU); 4♀, Gamjong-ri, Dong-myon, Chunchongun, 21. v. 1992 (O. Tadauchi, ELKU); 8♀, Jansudae, Inje-gun, 17. iv. 1994 (O. Tadauchi, ELKU); 20♀, Mt. Gariwang-san, alt. 1100 m, N37°27’15’’, E128°1’10’’, 10. vi. 2013 (O. Tadauchi, ELKU); 67♀, Mt. Odae-san, alt. 900 m, N37°40’0’’, E128°32’19’’, 9. vi. 2013 (O. Tadauchi, ELKU); 12♀, Ogari, Seon-myon, Yangyang-gun, 27. iv. 1992 (O. Tadauchi, ELKU); 4♀, Pupan-myon, Hongcheon-gun, 20. v. 1992 (O. Tadauchi, ELKU); 6♀, Souchomyon, Wonju-gun, 20. iv. 1994 (O. Tadauchi, ELKU); 7♀, Taegwallyong, Myongju-gun, 19. iv. 1994 (O. Tadauchi, ELKU); Bukdaesa temple, Mt. Odae-san, Jinbumyeon, Pyeongchang-gun, 1♀, 30. v. 1996 (H.S. Lee, QIA), 1♀, 30. v. 1998 (H.S. Lee, SNU), 5♀, 31. v. 1998 (H.S. Lee, SNU), 1♀, 1. vi. 1998 (H.S. Lee, SNU), 1♀, 13. vi. 2010 (H.S. Lee, QIA), 1♀, 8. vi. 1995 (J.W. Kim, SNU), 1♀, 2. ix. 1998 (H.S. Lee, SNU), 1♀, 3. ix. 1998 (H.S. Lee, SNU); 2♀, Heungjeong-ri, Pyeongchang, 30. viii. 1998 (H.S. Lee, SNU); 1♀, Hwangyari, Seomyeon, Yangyang, 29. iv. 2007 (H.S. Lee, QIA); 2♀, Jeolgol, Eoyun-ri, Nammyeon, Inje-gun, 30. iv. 2007 (H.S. Lee, QIA); Jingogae, Mt. Odae-san, Pyeongchang, 1♀, 31. v. 1995 (J.W. Kim, SNU), 2♀, 7. vi. 1995 (J.W. Kim, SNU); 1♀, Misiryeong rest area, Mt. Seolak-san, Chokcho, 1. iv.–24. vi. 2010 (by Malaise trap, J.C. Jeong, QIA); 10♂, Mt. Gariwang-san, Jeongseoneup, Jeongseon, 17. viii. 2010 (D.P. Lyu, QIA); 1♀, Mt. Odae-san, Jinbu, 20. iv. 1996 (H.S. Lee, QIA); 1♀, Mt. Seokbyeong-san, Imgye-ri, Imgyemyeon, Jeongseon, 22. v. 2002 (J.D. Yeo, QIA); 1♀, Samsan-ri, Yeongokmyeon, Gangreung, 28. iv. 2007 (H.S. Lee, QIA); 1♀, Sangchangbong-ri, Gonggeunmyeon, Hoengseonggun, 25. v. 2009 (H.S. Lee, QIA); 7♀, Sangwonsa temple, Mt. Chiak-san, Seongnam-ri, Sinrimmyeon, Wonju-si, 26. v. 2009 (H.S. Lee, QIA); 7♀, Seorakdong, Sokcho, 26. v. 2002 (H.S. Lee, QIA); 2♀, Yongpyeong, 23. iv. 1996 (H.S. Lee, SNU). Seoul: Mt. Gwanak-san, Sinlimdong, Gwanakgu, 1♀, 23. ix. 1995 (H.S. Lee, QIA), 1♀, 28. x. 2006 (H.K. Kim, SNU), 3♀, 4. v. 2013 (H.S. Lee, QIA); 1♀, Uiryeong road, Uidong, Dobonggu, 8. iv. 2010 (J.C. Jeong, QIA). GG: 1♀, Kwangung, 21. iv. 2002 (Y. Maeta, SULE); Kwangnung, Pochon-gun, 2♀, 24. iv. 1992 (O. Tadauchi, ELKU), 1♀, 19. v. 1992 (O. Tadauchi, ELKU); Anyang arboretum, Anyang-si, 2♀, 13. iv. 1998 (C.H. Lee, SNU), 1♀, 4. v. 1999 (H.T. Kim, SNU); 2♀, Baeneomi gogae, Seolmaejae, Yangpyeong, 15. v. 2010 (H.A. Lee, QIA); 1♀, CALS, Suwon, 29. vii. 1988 (C.H. Jeong, SNU); 1♀, Gwangneung, Pocheon, 6. v. 1994 (H.S. Lee, SNU); 1♀, Jeong Najong graveyard, Sokdaldong, Gunpo-si, 9. v. 2010 (H.S. Lee, QIA); Mirinae , Anseong, 1♀, 1. v. 1996 (J.M. Choi, SNU), 1♀, 4. v. 1996 (H.S. Lee, SNU); 1♀, Mt. Gwanggyo-san, Suwon, 23. ix. 1996 (Eunseol Oh, SNU); 13♀, Mt. Taehwa-san, 8. v. 1998 (H.T. Kim, SNU); 1♀, Songchu valley, Jangheingmyeon, Yangju-si, 8. iv. 2010 (J.C. Jeong, QIA); 2♀, Suwon, 30. v 1994 (H.S. Lee, SNU). GB: 2♀, Ipseok-ri, Hwabuk-myon, Sangju-si, 15. v. 2011 (O. Tadauchi, ELKU); 3♀, Chuyangmyeon, Bognhwa, 29. v. 2010 (H.S. Lee, QIA); 1♀, 30. iv. 1994 (H.W. Ryu, SNU); 1♀, Mt. Sobaek-san, Punggieup, Yeongju, 29. ix. 2006 (H.S. Lee, QIA); 1♀, Yoweon-ri, Seokbomyeon, Yeongyang, 8. viii. 2008 (H.S. Lee, QIA). JB: 2♀, Dal Gung, Sannae-myon, Namweon-gun, 29. iv. 1992 (T. Saigusa & O. Tadauchi, ELKU); 2♀, Hak Cheon, Sannae-myon, Namweon-gun, 10. v. 1991 (O. Tadauchi, ELKU); 1♀, Jeong Lyong Chy, Sannae-myon, Namweon-gun, 14. v. 1991 (T. Saigusa, ELKU); Sanlyong-ri, Sannae-myon, Namweon-gun, 2♀, 12. v. 1991 (O. Tadauchi, ELKU), 20♀, 2. v. 1992 (T. Saigusa & O. Tadauchi, ELKU); 6♀, Simwon valley, Sannae-myon, Namweon-gun, 13. v. 1991 (O. Tadauchi, ELKU); Jongseogdae, Mt. Jiri-san, 2♀, 26. vii. 1999 (H.T. Kim, SNU), 1♀, 29. vii. 1999 (J.Y. Chung, SNU); KBS building, Nogodan, Mt. Jiri-san, 8♀, 26. vii. 1999 (H.T. Kim, SNU); 1♀, Mt. Jiri-san, 30. ix. 2000 (C.S. Chae, SNU); Nogodan, Mt. Jirisan, 11♀, 26. v. 1997 (H.S. Lee, QIA), 1♂, 31. vii. 1997 (M.J. Sung, SNU), 1♀, 23. v. 1999 (H.T. Kim, SNU), 2♀ 3♂, 29. vii. 1999 (D.Y. Lee et al., SNU), 14♀ 11♂, 31. vii. 2000 (D.G. Song et al., SNU), 1♀, 1. viii. 2000 (K.S. Myung, SNU), 2♀ 1♂, 3. viii. 1996 (H.S. Lee & H.T. Kim, SNU), 1♀ 2♂, 6. viii. 1988 (H.S. Lee & J.H. Lee, QIA & SNU); 2♂, Nogodan, Sanjang, Mt. Jiri-san, 29. vii. 1999 (H.T. Kim, SNU); Road of Nogodan, Mt. Jiri-san, 9♀ 2♂, 26. vii. 1999 (H.T. Kim, SNU), 1♂, 29. vii. 1999 (H.T. Kim, SNU); Simwon, Mt. Jiri-san, 1♀, 23. v. 1999 (S.W. Park, SNU), 13♀, 5. vi. 1996 (H.S. Lee, QIA). GN: 7♀, Shinwon-ri, Unmun, Chongdo-gun, 26–27. iv. 2003 (Y. Maeta, SULE); Samjeon-ri, Macheong-myeon, Hamyang-gun, 1♀, 9. v. 1991 (T. Saigusa, ELKU), 1♀, 10. v. 1991 (O. Tadauchi, ELKU), 2♀, 11. v. 1991 (O. Tadauchi, ELKU), 1♀, 12. v. 1991 (T. Saigusa, ELKU), 5♀, 15. v. 1991 (O. Tadauchi, ELKU), 6♀, 1. v. 1992 (T. Saigusa & O. Tadauchi, ELKU); 1♀, Gajwadong, Jinhu-si, 3–7. ix. 1989 (SNU); Mt. Sinbul-san, Yangsan, 3♀, 27. iv. 2003 (H.S. Lee, QIA). JN: 3♀, Chusan, Gwangyang-si, 23. vi. 1995 (H.S. Lee, J.Y. Choi & T.K. Kim, SNU); Dabgok, Mt. Baekun-san, Gwangyang-si, 1♀, 24. vi. 1995 (J.Y. Choi, SNU), 1♀, 25. vi. 1995 (T.K. Kim, SNU), 2♀, 30. vii. 1998 (C.G. Lee, SNU); Piagol, Mt. Jiri-san, 9♀, 25. Iv. 1999 (H.T. Kim, SNU), 1♀, 22. v. 1999 (H.T. Kim, SNU); 5♀, Top area, Mt. Baekun-san, Gwangyang-si, 30. vii. 1998 (H.T. Kim, SNU). JJ: 2♀, Jeju Is., 21. x. 2005 (R. Murao, ELKU); 29♀, Mt. Halla-san, Haean-dong, 26. iv. 1997 (O. Tadauchi, ELKU); 1♂, Yonsil, Mt. Halla-san, 24. vii. 1990 (O. Tadauchi, ELKU).

Distribution. North Korea, South Korea, Japan, Russian Far East. Murao et al. (2014) listed this species only from North Korea in the Korean Peninsula. However, this species was previously recorded from South Korea by Ebmer (2006).

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

Flower records in South Korea. This species has been collected visiting the following at least 30 plant species of 15 families: Aceraceae : Acer pseudosieboldianum (Pax) Kom. Asteraceae : Cornus spp. Berbeidaceae: Berberis sp. Brassicaceae : Brassica spp.; Sisymbrium luteum (Maxim.) O.E. Schulz. Caprifoliaceae : Lonicera spp.; Weigela florida (Bunge) A. DC.; W. subsessilis (Nakai) L.H. Bailey ; W. spp. Ericaceae : Rhododendron spp. Fabaceae : Lespedeza bicolor Turcz. ; L. maximowiczii C. K. Schneid. ; L. sp. Geraniaceae : Geranium krameri Franch. & Sav. ; G. sp. Lamiaceae : Meehania urticifolia (Miq.) Makino. Primulaceae : Lysimachia barystachys Bunge. Rosaceae : Cerasus jamasakura (Siebold ex Koidz) H. Ohba ; Crataegus sp.; Malus toringo (Siebold) Siebold ex Vriese ; Neillia incisa (Thunb.) S.H. Oh ; Prunus sp.; Rubus crataegifolius Bunge ; Sanguisorba hakusanensis Makino ; Spiraea spp. Salicaceae : Salix sp. Scrophulariaceae : Melampyrum sp. Staphyleaceae : Staphylea bumalda DC.; S. sp. Valerianaceae : Valeriana officinalis L.

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: ♀.

FIGURE 6. A, B: propodeum. C, D: submedial patch of T 1 encircled. A, C: Lasioglossum occidens (Smith). B, D: L. formosae (Strand). A, B: ♀. C, D: ♂.