Lasioglossum (Leuchalictus) subopacum subopacum ( Smith, 1853 )

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 : 528-529

Lasioglossum (Leuchalictus) subopacum subopacum ( Smith, 1853)

Figs. 2A–B, 8C

Halictus subopacus Smith 1853: 63 [Syntypes: Natural History Museum, London, United Kingdom; ♀, Foo–cho–foo (now Fuzhou, Fujian Prov.), China]; Smith, 1873: 200 [in list]; Dalla Torre 1896: 85; Cockerell 1909: 316 [in key].

Halictus chinae Strand 1910: 182 [Syntypes: Museum für Naturkunde an der Humboldt Universität zu Berlin, Germany; ♀, Tsingtau (now Qingdao, Shandong Prov.), China]; Strand 1915: 63 [in list]. Synonymy by Blüthgen (1926a: 396; 1926c: 500).

Halictus horishensis Cockerell 1911: 662 [Holotype: U. S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA; ♂, Horisha, Taiwan]. Synonymy by Ebmer (1980: 501).

Halictus perangulatus Cockerell 1911: 663 [in key], 666 [Syntypes: Museum für Naturkunde an der Humboldt Universität zu Berlin, Germany, 7♀, Taiwan]. Synonymy by Blüthgen (1922: 63).

Halictus baguionis Crawford 1918: 170 [Holotype: U. S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA; ♀, Luzon, Bagua, Philippines]. Synonymy by Blüthgen (1926a: 416).

Lasioglossum (Sericohalictus) subopacum: Pesenko 1986: 137 [in key].

Lasioglossum (Lasioglossum) subopacum: Ebmer 1980: 500 –501; Sakagami & Tadauchi 1995: 183, Fig. 16; Ebmer 1998: 410; Ebmer & Maeta 1999: 230, Figs 7 –9; Murao 2011: 84–86, 88 [illustration], 91 [photograph].

Lasioglossum (Leuchalictus) subopacum: Pesenko 2006: 141 , 143 [illustrations], 159.

Diagnosis. This species is similar to L. sakishima Ebmer & Maeta from Japan. It is separated from L. sakishima by the female mesoscutum with dense transverse ridges on its medio-anterior region (Fig. 2A) and the female mesoscutum and mesoscutellum mixed with dark hairs. In contrast, in L. sakishima , the female mesoscutum is reticulated among punctures on its medio-anterior region and the female mesoscutum and mesoscutellum have only yellowish brown hairs. Lasioglossum subopacum is also divided into two subspecies (Murao 2011), the nominotypical subspecies ranging from Korean Peninsula to Southeastern Asia, and L. subopacum okinawa Ebmer & Maeta from Japan (Ryukyu Islands). The nominotypical subspecies is separated from L. subopacum okinawa by the female propodeum and T1 basally with thick, yellowish tomentose hairs (Murao 2011, Figs. 20, 22). In the ssp. okinawa , the female propodeum and T1 basally has thinner whitish tomentose hairs (Murao 2011, Figs. 21, 23).

Specimens examined. (n = 99) [ South Korea] GW: 1♀, Ogari, Seon-myon, Yangyang-gun (O. Tadauchi, ELKU). Seoul: 1♀, Mt. Gwanak-san, Sinlimdong, Gwanakgu, 17. v. 2013 (T.H. Jang, SNU); 1♀, 2. x. 1992 (S.A. Choi, QIA). GG: 2♀, Kwangung, 2. viii. 1998 (Y. Maeta, SULE); 7♀, Kwangnung, Pochon-gun, 19. v. 1992 (O. Tadauchi, ELKU); 1♀, Anyang arboretum, Anyang-si, 29. ix. 2000 (J.N. Kang, SNU); CALS, Suwon, 1♀, 10. x. 1995 (B.Y. Kim, SNU), 1♂, 27. ix. 2001 (J.W. Choi, QIA); Eungogae, Gwangju, 1♂, 1. x. 1980 (S.H. Kim, QIA), 1♀, 15. ix. 1984 (Y.J. Kim, QIA); 1♀, Gwangreung, Pocheon, 20. v. 1983 (H.Y. Choi, QIA); 2♀, Hantaek arb., Yongin, 25. vii. 2001 (H.S. Lee, QIA); 1♀, Mt. Cheonma-san, 12. vi. 1982 (QIA); 1♀, Mt. Gamak-san, Paju-si, 8. ix. 1984 (J.I. Kim, QIA); 1♀, Mt. Gwanggyo-san, Suwon, 26. vi. 1989 (B.C. Seo, SNU); 1♀, Namhansanseong, Hanam-si, 5. vi. 1993 (E.J. Seo, QIA); 1♀, Panbu-ri, Baekhakmyeon, Yeoncheon-gun, 27. vi. 1987 (H.G. Yu, QIA); Suwon, 1♀, 10. v. 1987 (S.G. Cho, SNU), 1♀, 30. v. 1994 (H.S. Lee, SNU), 1♀, 11. vii. 1994 (H.S. Lee, SNU), 1♀, 17. x. 1994 (H.T. Choi, SNU). GN: 1♀, Wahyeon-ri, Irun-myeon, Geoje-si, 14. v. 2011 (O. Tadauchi, ELKU); 4♀, Boriam, Geum-san, Namhae, 18. viii. 1994 (H.S. Lee, SNU); 1♀, Mt. Sobaek-san, Yeongpung, 15. vii. 1994 (J.H. Sin, QIA); 1♀, Pyochungsa, Miryang, 24. vii. 2003 (H.S. Lee, QIA); 1♂, Tongdosa temple, Yangsan, 26. vii. 2003 (H.S. Lee, QIA); 2♀, Yulgoksa temple, Sancheongmyeon, Snacheong-gun, 14. v. 2010 (H.S. Lee, QIA). JN: Chusan, Gwangyang-si, 1♀, 27. vii. 1998 (H.T. Kim, SNU), 2♂, 14. viii. 2002 (H.S. Park, SNU). JJ: 1♂, Jeju Is., 22. x. 2005 (O. Tadauchi, ELKU); 1♀, Myeong-do-am, alt. 400–600 m, Jeju-shi, 15. ix. 1998 (O. Tadauchi, ELKU); 2♀, Pijarim Forests, Pukjeju-gun, 24. iv. 1997 (J.-c. Paik & O. Tadauchi, ELKU); 1♀, Andeoggyegok, Andeok, Seoguiop, 18. ix. 2010 (H.S. Lee, QIA); 1♀ 1♂, Deoksu-ri, Andeog, Seoguipo, 19. vii. 2001 (Y.B. Lee, QIA); 1♀, Donnaeko, Seoguipo, 23. v. 1996 (H.S. Lee, QIA); 1♂, Hanrim park, Hyeonjae, Hanrim, 19. vii. 2001 (Y.B. Lee, QIA); 1♂, Sea village, Jungmun, Seoguipo, 20. vii. 2001 (Y.B. Lee, QIA); 1♀, Wudo Is., 13. iv. 1991 (QIA); 1♀, Yeomisji garden, Jungmun, Seoguipo, 20. vii. 2001 (Y.B. Lee, QIA); 2♀, Yeongheingdong, Jeju, 8. viii. 2003 (H.S. Lee, QIA).

Distribution. South Korea, China, Taiwan, Vietnam, Philippines.

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

Flower records in South Korea. This species has been recorded visting the following 19 plant species in 12 families: Araliaceae : Eleutherococcus senticosus (Rupr. & Maxim.) Maxim. Asteraceae : Aster yomena (Kitam.)

Honda; Cosmos bipinnatus Cav. ; Galinsoga quadriradiata Ruiz & Pav. Caprifoliaceae : Lonicera sp.; Viburnum opulus L. Elaeagnaceae : Elaeagnus sp. Malvaceae : Hibiscus syriacus L. Polygonaceae : Persicaria thunbergii (Siebold & Zucc.) H. Gross. Ranunculaceae : Clematis sp.; Ranunculus sp. Rosaceae : Crataegus sp.; Malus sp; Sorbus commixta Hedl. Rutaceae : Phellodendron amurense Rupr. ; P. sp. Sapindaceae : Koelreuteria paniculata Laxm. Styracaceae : Styrax obassia Siebold & Zucc. Verbenaceae : Vitex negundo L. var. incisa (Lam.) C.B. Clarke.

Figures

FIGURE 7. A – D: hair tufts on S 6. A: Lasioglossum circularum Fan & Ebmer. B: L. denticolle (Morawitz). C: L. formosae (Strand). D: L. kansuense (Blüthgen). A – D: ♂.