Lasioglossum (Dialictus) ellipticeps (Blüthgen, 1923)

Murao, Ryuki, Tadauchi, Osamu & Lee, Heung-Sik, 2015, Synopsis of Lasioglossum (Dialictus) Robertson, 1902 (Hymenoptera, Apoidea, Halictidae) in Japan, the Korean Peninsula and Taiwan, European Journal of Taxonomy 137, pp. 1-50 : 37-40

Lasioglossum (Dialictus) ellipticeps (Blüthgen, 1923)

Figs 20 , 21 , 22A , 26B

Halictus ellipticeps Blüthgen, 1923: 254 (holotype: Museum für Naturkunde, Humboldt Universität zu Berlin, Germany, ♀; type locality: Amur, Russia).

Halictus permicus Blüthgen, 1923: 330 –331 (lectotype: Institute of Systematic and Experimental Zoology, Polish Academy of Sciences, Krakow, Poland, ♂; type locality: “Perm”, designated by Pesenko, 2007b: 117). Synonymized by Ebmer, 1978.

Halictus (Chloralictus) mayacensis Cockerell, 1924: 582 (syntypes: U. S. National Museum of Natural History, Smithsonian Institution, Washington, DC, USA, ♀; type locality: Primorsky, Russia); Synonymy by Blüthgen 1931.

Halictus ellipticeps – Hirashima 1957: 7–8.

Lasioglossum (Evylaeus) ellipticeps Ebmer 1978: 310–311 . — Ebmer 1982: 215–216. — Ebmer 1996: 282–283. — Ebmer 2005: 375. — Ebmer 2006: 565.

Evylaeus (Smeathhalictus) ellipticeps Pesenko 2007a: 28 . — Pesenko 2007b: 117.

Diagnosis

This species is similar to Lasioglossum briseis Ebmer and L. eomontanus Ebmer from Far East Asia ( Pesenko 2007b). For the differences between these species, see Pesenko (2007b).

Material examined

SOUTH KOREA: Gangwon-do: 2 ♀♀, Doam Myon Pyongchang-gun, 20 Aug. 2001 (Y. Maeta, SULE); 1 ♀, Mt. Hambaek-san, 14 Aug. 1999 (S. Park, SNU). Jeollabuk-do: JeongLyongChy, SanNaeMeon, NamWeon-gun, 14 ♀♀, 14 May 1991 (O. Tadauchi, ELKU), 1 ♀, 14 Jul. 1991 (K. Kanmiya, ELKU). Ulleung-do: 18 ♀♀, 1 ♂, Chusan, 11 Aug. 1999 (H. Kim, SNU); 3 ♀♀, 2 ♂♂, Jukdo, 12 Aug. 1999 (H. Kim, SNU); 2 ♀♀, Naesujeon, 12 Aug. 1999 (H. Kim, SNU); 1 ♀, 2 ♂♂, Naribunji, 11 Aug. 1999 (H. Kim, SNU); 2 ♂♂, Seoginbong, Dodong, 10 Aug. 1999 (H. Kim, SNU). Gyeongsangnam-do: 1 ♂, Sam- Jeong Ri, 14 Jul. 1991 (K. Kanmiya, ELKU). Jeollanam-do: 3 ♀♀, Jongseokdae, Mt. Jiri-san, 29 Jul. 1999 (H. Kim, SNU); 1 ♀, 1 ♂, Nogodan, Mt. Jiri-san, Gurye-gun, 29 Jul. 1999 (H. Kim, SNU). Jejudo: Yonsil, Mt Halla-san, 50 ♀♀, 24 Jul. 1990 (O. Tadauchi, ELKU), 12 ♀♀, 2 ♂♂, 27 Jul. 1990 (O. Tadauchi, ELKU); 13 ♀♀, 3 ♂♂, Mt Halla-san, alt. 1400–1600 m, 25 Jul. 1990 (O. Tadauchi, ELKU); 1 ♀, Ryuzinkaku, alt. 1600 m, Mt. Hanna, 16 Jul. 1968 ( T. Shirozu, ELKU).

Additional description

LABRUM ( Fig. 20 C–D). Basal area approximately 2.2 × as wide as long in female; basal elevation moderately developed in female, absent in male; distal process of female slender, nearly as long as basal

area, and without lateral projection, that of male absent; keel of distal process narrow, apically bluntly pointed; labral fimbria acutely pointed at apex in both sexes.

STERNA. S7–S8 ( Fig. 21E ): S7 with short, apically rounded median process; median process of S8 slightly present, round or truncate apically, with sparse short hairs.

MALE GENITALIA ( Fig. 21 A–D). Gonobase nearly flat at bottom, ventral arms connected with each other at upper ends; gonocoxite smooth, gently sloping in lateral view, inner and outer dorsal margins nearly parallel; gonostylus small, bud-like in lateral view, located at top of gonocoxite, with sparse short hairs; ventral retrorse lobe tongue-like, long, apex reaching gonobase, with short hairs ventrally, apical hairs longer than around one; penis valve higher than gonocoxite, without cleft on top.

Distribution

Russian Far East (Yakutia, Khabarovsk and Primorsk Terr., Irkutsk Prov.), Mongolia and the Korean Peninsula (north, new record for south).

Flight records

Female: May to August.

Male: July.

Flower records

In South Korea, this species visits the following 10 species in 6 families. Asteraceae : Erigeron annuus (L.) Pers., Lactuca indica L. Balsaminaceae : Impatiens balsamina L., I. noli-tangere L. Campanulaceae : Campanula takeshimana Nakai , Codonopsis lanceolata (Siebold & Zucc.) Trautv. , Platycodon grandiflorus (Jacq.) A. DC. Geraniaceae : Geranium sp. Lamiaceae : Agastache rugosa (Fisch. & C.A. Mey.) Kuntze. Lythraceae : Lythrum anceps (Koehne) Makino.

Figures

Fig. 20. Lasioglossum (Dialictus) ellipticeps (Blüthgen, 1923). A–B. Head. C–D. Labrum. E. Mese- pisternum. F. Hairs on metasomal sterna. A, C, E: ♀. B, D, F: ♂.

Fig. 21. Lasioglossum (Dialictus) ellipticeps (Blüthgen, 1923), ♂. A. Genitalia in ventral view. B. Genitalia in dorsal view. C. Genitalia in lateral view. D. Ventral retrorse lobe of genitalia. E. S7–S8. Scale bars: A–C, E = 0.2 mm, D = 0.1 mm.

Fig. 22. Distribution maps. A. Lasioglossum (Dialictus) ellipticeps (Blüthgen, 1923) in the Korean Peninsula. B–C. Lasioglossum (Dialictus) miyabei Murao et al., 2006 (B in the Korean Peninsula, C in Japan).

Fig. 26. Photographs for keys: PP on supraclypeal area of female. A. Lasioglossum (Dialictus) meakanense Murao & Tadauchi, 2009. B. L. (D.) ellipticeps (Blüthgen, 1923).