Lasioglossum (Hemihalictus) longirostre ( Morawitz, 1876 )

Niu, Zeqing, Zhang, Dan & Zhu, Chaodong, 2020, Extraordinary bees of the genus Lasioglossum Curtis, 1833 (Hymenoptera: Apoidea: Halictidae) from China, Zoological Systematics 45 (1), pp. 50-58 : 51

Lasioglossum (Hemihalictus) longirostre ( Morawitz, 1876) ( Figs 1–3 )

Halictus longirostris Morawitz, 1876: 236 , ♂, ♀. Type locality: Ferghana (Ferghana Valley, Uzbekistan); Blüthgen, 1931: 324; Popov, 1959: 427, ♂, ♀, figs 1–8.

Halictus (Rostrohalictus) longirostris ( Morawitz, 1876) : Warncke, 1975: 88, ♂, ♀; Warncke, 1982: 80.

Evylaeus longirostre Morawitz, 1876 : Aliev et al., 2005: 156.

Evylaeus (Rostrohalictus) longirostris ( Morawitz, 1876) : Pesenko, 2007: 22, ♂, ♀.

Lasioglossum (Dialictus) longirostre ( Morawitz, 1876) : Michener, 2000: 361.

Lasioglossum (Evylaeus) longirostre ( Morawitz, 1876) : Pauly, 2016.

Lasioglossum (Hemihalictus) longirostre ( Morawitz, 1876) : Gibbs et al., 2013: 10; Murao et al., 2017: 25 ; Ascher & Pickering, 2019.

Material examined. China, Xinjiang, Gongliu Xian, Kuerdening (43º18′N, 82º51′E), 4♂ 1♀, 3.VIII.2018, leg. Yong Wang.

Distribution. China (Xinjiang), Greece, Turkey, Armenia, Azerbaijan, Georgia, Iran, Lebanon, Israel, Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan, Afghanistan.

Floral association. Cirsium sp. ( Asteraceae ), Ferula tenuisecta (Apiaceae) , Ixioliron tataricum (Ixioliriaceae) , Origanum tyttanthum (Lamiaceae) , Salvia sp. ( Lamiaceae ), Taraxacum sp. ( Asteraceae ), Rubus sp. ( Rosaceae ) ( Popov, 1959; Ebmer, 2011; Pauly, 2016; Murao et al., 2017).

Remarks. The species is firstly recorded in China. The most obvious character of the species is its malar area very long, nearly as long as the diameter of compound eyes in male ( Fig. 2D ), or 0.3 times length of the diameter of compound eyes in female ( Fig. 1E ). The subgeneric status of the species is subject to different opinion, which perhaps due to the inconspicuous character of the female posterior vertical surface of propodeum. The female has the posterior vertical surface of propodeum without lateral carina in upper half, but forming a distinct right angle with dorsal and lateral surfaces ( Fig. 1C ). Aliev et al. (2005) recorded this species in genus Evylaeus, and Pesenko (2007) recorded it in subgenus Evylaeu s (Rostrohalictus). Michener (2000) and Pauly (2016) recorded the species in different subgenus of Lasioglossum (Dialictus) , Lasioglossum (Evylaeus) , respectively. Then, Gibbs et al. (2013) more broadly applied the species in Lasioglossum (Hemihalictus) . Murao et al. (2017) and Ascher & Pickering (2019) follow the treatment of Gibbs et al. (2013). Here, we report the species under the subgenus Lasioglossum (Hemihalictus) .

Figures

Figure 1. Lasioglossum (Hemihalictus) longirostre (Morawitz, 1876), female. A. Body in lateral view. B. Fore wing. C. Propodeum in dorsolateral view. D. Inner hind tibial spur. E. Head in frontal view. F. Mesosoma in dorsal view. G. Mesosoma in lateral view. H. Metasoma in dorsal view. Scale bars: A–C, E–H=1.0mm; D =0.5mm.

Figure 2. Lasioglossum (Hemihalictus) longirostre (Morawitz, 1876), male. A. Body in lateral view. B. Fore wing. C. Head in frontal view. D. Head in lateral view. E. Mesosoma in dorsal view. F. Propodeum in dorsolateral view. G. Metasoma in dorsal view. H. Metasoma in ventral view. Scale bars=1.0 mm.

Figure 3. Lasioglossum (Hemihalictus) longirostre (Morawitz, 1876), male. A. Genitalia in dorsal view. B. Genitalia in lateral view. C. Genitalia in dorsolateral view. D. Genitalia in ventrolateral view. E. S7–S8 in ventral view. F. Mesosoma in lateral view. Scale bars: A–E=0.5mm; F =1.0mm.