Lasioglossum villosulum subsp. trichopse, Strand, 1914

Pauly, Alain, Noël, Grégoire, Sonet, Gontran, Notton, David G. & Boevé, Jean-Luc, 2019, Integrative taxonomy resuscitates two species in the Lasioglossum villosulum complex (Kirby, 1802) (Hymenoptera: Apoidea: Halictidae), European Journal of Taxonomy 541, pp. 1-43 : 20

Subspecies trichopse ( Strand, 1914 )

Synonymy (following Ebmer 1988: 649)

Halictus trichopsis Strand 1914: 156 . Holotype: ♂, Taiwan, Taihorin, Jan. 1910 ( SDEI). Not examined .

Halictus melanomitratus Strand 1914: 156 . Holotype: ♀, Taiwan, Taihorin, 7 Nov. 1910 (SDEI). Syn. by Blüthgen 1923: 241. Not examined.

Halictus melanomitratus var. mitratolus Strand 1914: 158 . Holotype: ♀, Taiwan, Taihorin, Par. 1910 (SDEI). Syn. by Blüthgen 1923: 241. Not examined.

Halictus villosulopsis Blüthgen 1926: 540 . Syntypes: 3 ♀♀, Assam, Shillong, May 1903, leg. Turner (NHMUK013380276). Syn. by Ebmer 1978a: 207. Examined by DGN.

Halictus pahanganus Blüthgen 1928: 374 . Holotype: ♂, Malaysia, Lubok Tamang, cleared Hill, 4000 ft, Pahang, Federated Malay States, 10 Jun. 1923 (NHMUK013380277). Syn. by Ebmer 1978a: 207. Examined by DGN.

Distribution

This subspecies is distributed from East Himalaya, China ( Ebmer 1978a: 207; 2006: 569), Mongolia ( Ebmer 1982: 219; 2005: 378), Japan (Hokkaido: Usui et al. 1976: 228; Izu: Takahashi & Sakagami 1993: 271, 275; Honshu: Haneda 1990: 8; Okinawa: Azuma & Kinjo 1987: 314), North Korea ( Ebmer 1978b: 315), South Korea ( Murao 2017), south of Russian Far East (Primorsk Terr.: Ebmer 1996: 285, 2006: 569; Amur Prov.: Pesenko 2007b: 113), Taiwan and south to Malaysia ( Fig. 11 ). It is not the purpose of this paper to discuss the status and diagnosis of this subspecies, as little material is available for examination and no fresh material was available for DNA study. The subspecies is distinguished from the subspecies villosulum mainly by shorter and more rounded head and broader eyes. We have examined and photographed the heads of old specimens from the typical locality in Taiwan and preserved in the MNHUB and compared them with the heads of L. villosulum villosulum and L. medinai ( Fig. 12 ). The punctation and genitalia of males are similar to those of L. villosulum .

Figures

Fig. 11. Geographical distribution of Lasioglossum villosulum trichopse (Strand, 1914).

Fig. 12. Heads. A. Lasioglossum villosulum villosulum (Kirby, 1802), ♀ (France, Allier). B. L. medinai, ♀ (France, Vaucluse). C. L. villosulum trichopse (Strand, 1914), ♀ (Taiwan). D. Idem, ♂.