Lasioglossum (Lasioglossum) subopacum subopacum (Smith, 1853)

Murao, Ryuki, 2011, Taxonomic notes on Lasioglossum (Lasioglossum) subopacum (Smith) and L. (L.) okinawa Ebmer et Maeta (Hymenoptera, Halictidae) from Asia, ZooKeys 143, pp. 83-92 : 84-86

Lasioglossum (Lasioglossum) subopacum subopacum (Smith, 1853) Figs 11 20, 22

Halictus subopacus Smith, 1853, Cat. Hym. Brit. Mus., 1: 63 [Syntype: Natural History Museum, London, United Kingdom; ♀, Foo-cho-foo (now Fuzhou, Fujian Prov.), north China]; Smith, 1873, Trans. ent. Soc. London, 1873: 200 [in list]; Dalla Torre, 1896, Cat. Hym., 10: 85; Cockerell, 1909, Ann. Mag. nat. Hist., (8)4: 316 [♀, in key]; Cockerell, 1919, Ann. Mag. nat. Hist., (9)3: 123; Wu, 1941, Cat. Ins. Sin., 6: 273; Hirashima, 1957, Sci. Bull. Fac. Agr. Kyushu Univ., 16(1): 20.

Halictus chinae Strand, 1910, Berl. ent. Zeitschr., 54: 182 [Syntypes: Museum für Naturkunde an der Humboldt Universität zu Berlin, Germany; 2♀, Tsingtau (now Qingdao, Shandong Prov.), China]; Strand, 1915, Ent. Mitt., 4: 63 [in list]; Blüthgen, 1926, Deutsch. ent. Zeitschr., 1925: 396 [Synonymy]; Wu, 1941, Cat. Ins. Sin., 6: 272.

Halictus horishensis Cockerell, 1911, Ann. Mag. nat. Hist., (8)8: 662 [Holotype: U. S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA; ♂, Horisha, Taiwan]; Ebmer, 1980, Linzer biol. Beitr., 11(1): 501 [Synonymy].

Halictus perangulatus Cockerell, 1911, Ann. Mag. nat. Hist., (8)8: 663 [in key], 666 [Syntype: Museum für Naturkunde an der Humboldt Universität zu Berlin, Germany, 7♀, Taiwan]; Blüthgen, 1922, Deutsch. ent. Zeitschr., 1922: 63 [Synonymy].

Halictus baguionis Crawford, 1918, Proc. ent. Soc. Washington, 19: 170 [Holotype: U. S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA; ♀, Luzon, Bagua, Philippines]; Blüthgen, 1926, Deutsch. ent. Zeitschr., 1925: 416 [Synonymy].

Lasioglossum (Sericohalictus) subopacum : Pesenko, 1986, Trudy Zool. Inst. Akad. Nauk SSSR, 159: 137 [in key].

Lasioglossum (Leuchalictus) subopacum : Pesenko, 2006, Zoosyst. Ross., 15(1): 159.

Lasioglossum (Lasioglossum) subopacum : Ebmer, 1980, Linzer biol. Beitr., 11(1): 500, 501; Sakagami & Tadauchi, 1995, Esakia, 35: 183, Fig. 16; Ebmer, 1998, Linzer biol. Beitr., 30(1): 410; Ebmer & Maeta, 1999, Linzer biol. Beitr., 31(1): 230, Figs 7-9.

Diagnosis.

This species is divided into two subspecies, one of which is newly relegated to a subspecies of Lasioglossum subopacum as treated below. The nominotypical subspecies is separated from the ssp. okinawa by only the female characteristic that propodeum, and T1 basally with dense and thick yellowish tomentose as in Figs 20, 22 . In male, both subspecies cannot clearly separate. This subspecies is separated from the other Korean Lasioglossum s. str. species in having the combination of following characters: the mesoscutum reflexed upward in both sexes and densely transversely rows on medio-anterior margin in female; the female propodeum and T1 with dense yellowish tomentose; the shape of hair tufts on male S6 and the gonostylus as in Fig. 11 ; and the male genitalia without ventral retrorse.

Distribution.

China (north and southeastern areas), Taiwan, Vietnam, Philippines, and Korean Peninsula (south).

Flight record.

Female: March to December. Male: May to October.

Flower record.

In Korea, this species visited the following six species of flowering plants. Apiaceae : Angelica miqueliana . Asteraceae : Aster yomena ; Sonchus arvensis . Brassicaceae : Brassica sp. Caprifoliaceae : Lonicera sp. Rosaceae : Crataegus sp.

Specimens examined.

[SOUTH KOREA] 2♀1♂, Cheju Is., 17. X. 2005 (O. Tadauchi and R. Murao), 22. X. 2005 (O. Tadauchi); 1♀, Myeong-do-am, 400-600m, Cheju city, Cheju Is., 15. IX. 1998 (O. Tadauchi, ELKU); 2♀, Pijarim Forests, Pukcheju-gun, Cheju Is., 24. IV. 1997 (O. Tadauchi and J. C. Paik, ELKU); 1♂, Pijarim, Pukcheju-gun, Cheju Is., 15. IX. 1998 (J. C. Paik, ELKU); 1♂, Kwanumsa, 500m, Cheju city, Cheju Is., 14. IX. 1998 (O. Tadauchi, ELKU); 8♀, KwangNung, Pocheon-shi, Gyeonggi-do, 19. V. 1992 (O. Tadauchi, ELKU).

[CHINA] Hunan Prov.: 1♀, Yuanling, 7. V. 1939 (T. C. Maa, BPBM); 1♀ Changteh, Yangshan, 11. X. 1938 (T. C. Maa, BPBM). Fujian Prov.: 1♀, Changting city, 3. VI. 1940 (T. C. Maa, BPBM); 12♀, Chungan, Bohea Hill, 11. VIII. 1939 (T. C. Maa, BPBM), 25. IX. 1939 (T. C. Maa, BPBM), 30. IX. 1939 (T. C. Maa, BPBM), 7. X. 1939 (T. C. Maa, BPBM), 24. IV. 1940 (T. C. Maa, BPBM), 6. V. 1940 (T. C. Maa, BPBM), 11. VIII. 1943 (T. C. Maa, BPBM); 1♀, Kienyang, Nwangkeng, 30. VII. 1943 (T. C. Maa, BPBM); 1♀, Kienyang, Liutun, 6. VII. 1942 (T. C. Maa, BPBM); 3♀ and 1♂, Shaowu city, 26. V. 1943 (T. C. Maa, BPBM), 11. IX. 1943 (T. C. Maa, BPBM), 8. XII. 1941 (T. C. Maa, BPBM), 23. XII. 1941 (T. C. Maa, BPBM, illustrated in Figs 20, 22); 1♀, Shaowu, 9. VII. 1942 (T. C. Maa, BPBM); 2♀, Shaowu, Shuipeichieh, 7. VII. 1941 (T. C. Maa, BPBM), 20. VII. 1941 (T. C. Maa, BPBM); 7♀, Shaowu, ShuiPeiKai, 16. III. 1942 (T. C. Maa, BPBM), 26. III. 1942 (T. C. Maa, BPBM), 13. V. 1943 (T. C. Maa, BPBM), 1. VI. 1943 (T. C. Maa, BPBM), V. 1945 (T. C. Maa, BPBM), 1♀, Shaowu, Tachuland, 25. IV. 1943 (T. C. Maa, BPBM); 2♀, Yungan, 19. X. 1940 (T. C. Maa, BPBM), 22. IV. 1941 (T. C. Maa, BPBM).

Figures

Figures 14 - 19. 14 - 15 Male of Lasioglossum (Lasioglossum) subopacum okinawa Ebmer et Maeta. 16 - 17 Male of Lasioglossum (Lasioglossum) occidens (Smith) 18 - 19 Male of Lasioglossum (Lasioglossum) sakishima Ebmer et Maeta 14, 18 labrum 16 first metasomal tergum 15, 17, 19 distal parts of metasomal sternum.

Figures 20 - 24. 20, 22 Female of Lasioglossum (Lasioglossum) subopacum subopacum (Smith) 21, 23 Female of Lasioglossum (Lasioglossum) subopacum okinawa Ebmer et Maeta 20, 21 hairs on propodeum 22, 23 hairs on first metasomal tergum 24 Distribution of both ssp. subopacum and ssp. okinawa.

Figures 7 - 13. 7 - 10 Male of Lasioglossum (Lasioglossum) subopacum okinawa Emer et Maeta 7 seventh and eighth metasomal sterna 8 genitalia in ventral view 9 genitalia in dorsal view 10 - 13 gonostylus of genitalia in ventral view 11 Male of Lasioglossum (Lasioglossum) subopacum subopacum (Smith) 12 Male of Lasioglossum (Lasioglossum) occidens (Smith) 13 Male of Lasioglossum (Lasioglossum) sakishima Ebmer et Maeta Scale bars: 0.2 mm.