Thrinchostoma (T.) yunnanense Niu & Zhu

Zeqing Niu, Feng Yuan, Pia Oremek, Feng Liu & Chaodong Zhu, 2016, Thrinchostoma Saussure, little known bee genus from China, with description of a new species (Hymenoptera: Halictidae), Zoological Systematics 41 (2), pp. 207-215 : 209

publication ID	https://doi.org/ 10.11865/zs.201619
publication LSID	urn:lsid:zoobank.org:pub:36D293B8-D83C-4E82-A8FF-A1C71663E3B0
DOI	https://doi.org/10.5281/zenodo.6066366
persistent identifier	https://treatment.plazi.org/id/03D98796-FFAB-8702-FF37-FD4EFA41FBF7
treatment provided by	Plazi
scientific name	Thrinchostoma (T.) yunnanense Niu & Zhu
status

Treatment

Key to Chinese known species of Thrinchostoma (Thrinchostoma) View in CoL .

1. Flagellum 11-segmented, male ...........................................................................................................................................................2

Flagellum 10-segmented, female .......................................................................................................................................................3

2. Malar area nearly as long as the width of mandible base ( Fig. 3 View Figures 1 – 6 ); trochanter of hind leg ventrally with angular projection ( Fig. 6 View Figures 1 – 6 ); second marginal crossvein reaching the radial nervure ( Fig. 7 View Figures 7 – 10 ) ...................................... Thrinchostoma (T.) sladeni Cockerell, 1913 View in CoL

Malar area longer than the width of mandible base ( Fig. 19 View Figures 17 – 22 ); trochanter of hind leg ventrally normal, without angular projection ( Fig. 22 View Figures 17 – 22 ); second marginal crossvein not reaching the radial nervure ( Fig. 23 View Figures 23 – 26 ) ..................................................................................... ....................................................................................................................... Thrinchostoma (T.) yunnanense Niu & Zhu , sp. nov.

3. Malar area about one-third as long as the width of mandible base ( Fig. 13 View Figures 11 – 16 ); second marginal crossvein angulated medially ( Fig. 14 View Figures 11 – 16 ); apical one-third part of clypeus yellowish-brown, other part of clypeus black ( Fig. 12 View Figures 11 – 16 ); T2 with broad orange apical margin ( Fig. 15 View Figures 11 – 16 ) ....................................................................................................................................... Thrinchostoma (T.) sladeni Cockerell, 1913 View in CoL

Malar area longer than the width of mandible base ( Fig. 29 View Figures 27 – 32 ); second marginal crossvein straight medially ( Fig. 30 View Figures 27 – 32 ); whole clypeus dust yellow ( Fig. 28 View Figures 27 – 32 ); T2 without broad orange apical margin ( Fig. 31 View Figures 27 – 32 )......... Thrinchostoma (T.) yunnanense Niu & Zhu , sp. nov.