Lasioglossum (Hemihalictus) amamiense Ebmer & Sakagami, 1994

Murao, Ryuki, 2021, Redefinition of the sexstrigatus group of Lasioglossum (Hemihalictus) Cockerell, 1897 (Hymenoptera, Apoidea, Halictidae), with a revision of Japanese species, European Journal of Taxonomy 763, pp. 1-74 : 11

Lasioglossum (Hemihalictus) amamiense Ebmer & Sakagami, 1994

Fig. 18D

Lasioglossum (Evylaeus) amamiense Ebmer & Sakagami in Ebmer et al., 1994: 32 (holotype: ELKU, ♀, type locality =Shinmura, Nishinakama, Amami Oshima Is., Kagoshima Pref., Japan, examined).

Lasioglossum (Evylaeus) amamiense – Murao et al. 2010: 3 , 31–32 (in key), figs 1–2 (♀ ♂).

Diagnosis

Females are similar to Lasioglossum (Hemihalictus) taeniolellum ( Vachal, 1903) but differ by the labrum without lateral projection on distal process ( Murao et al. 2010: fig. 1m) and mesepisternum with shallow PP on upper area ( Murao et al. 2010: fig. 1f). In contrast, in L. (H.) taeniolellum , the distal process of labrum has a horn-like lateral projection ( Fig. 14D ) and a mesepisternum with deep PP on the upper area.

Distribution

Japan (central Ryukyus: Amami-Ohshima Is., Kikai-jima Is., and Tokuno-shima Is.).

Flight records

Female: March to October.

Male: May to September ( Murao et al. 2010).

Flower records

Thirteen species in 9 families were reported as floral records by Murao et al. (2010).

Habitat

This species has been collected from cultivated and urban areas at low elevations and seaside wasteland ( Murao et al. 2010).

Figures

Fig. 18. Distribution maps. A. Lasioglossum (Hemihalictus) sphecodicolor Sakagami & Tadauchi, 1995. B. L. (H.) subsimplicior sp. nov. C. L. (H.) taeniolellum (Vachal, 1903). D. L. (H.) amamiense Ebmer & Sakagami, 1994 (red circle), L. (H.) ikudomei sp. nov. (purple circle), L. (H.) smilodon Ebmer & Sakagami, 1994 (light blue circle) and L. (H.) tadauchii Murao, 2012 (yellow circle).

Fig. 14. Lasioglossum (Hemihalictus) taeniolellum (Vachal, 1903). A. ♀, lateral habitus. B. ♀, head in frontal view. C. ♂, head in frontal view. D. ♀, labrum. E. ♀, mesoscutum. F. ♀, metapostnotum. Scale bars: A = 3 mm; B–C, E–F = 0.5 mm; D = 0.25 mm.