中国淡脉隧蜂亚属二新种记述(膜翅目,隧蜂科)

TWO NEW SPECIES OF SUBGENUS LASIOGLOSSUM(HYMENOPTERA,HALICTIDAE) FROM CHINA

记述隧蜂科淡脉隧蜂属淡脉隧蜂亚属2新种,横皱淡脉隧蜂Lasioglossum(Lasioglossum)transruginosum Zhang,Niu et Zhu,sp.nov.和内蒙淡脉隧蜂L.(L.)neimengensis Zhang,Niu et Li,sp.nov.,模式标本保存于中国科学院动物研究所动物标本馆和云南农业大学昆虫标本室。

In this paper two new species of subgenus Lasioglossum were described.The specimens examined in this study are deposited in the Insect Collection of Institute of Zoology,Chinese Academy of Sciences,Beijing,and the Insect Collection of Yunnan Agricultural University,Kunming,China,respectively.1 Lasioglossum（Lasioglossum） transruginosumZhang,Niu et Zhu,sp.nov.（Figs 1-4） ♀ Body length 7.5-8.0 mm.This species can be distinguished from other species of the subgenus by the following characters：1） sculptures on mesosoma and metasoma tergum distributed equably;2） dorsal surface of propodeum with transverse ridges.Holotype ♀,China,Tibet Autonomous Region,Chayu County（28.6°N,97.4°E;alt.2 300 m） ,17 June 1973,HUANG Fu-Sheng.Paratype 1♀,China,Sichuan Province,Litang County,alt.3 700 m,4 June 1982,ZHANG Xue-Zhong.Etymology.The name transruginosum is derived from the Latin trans-（= transverse） and Latin ruginosum（= ridges） ,refers to the species dorsal surface of propodeum with transverse ridges.2 Lasioglossum（Lasioglossum） neimengensis Zhang,Niu et Li,sp.nov.（Figs 5-8） ♀ body length 7-8 mm.This species can be distinguished from the similar L.（L.） denticolle（Morawitz,1891） by the following combination of characters：1） hair sparse and without panniform patch;2） pronotum lateral angle projecting slighter than L.（L.） denticolle（Morawitz,1891） ;3） mesoscutum with coarse punctures;4） dorsal surface of propodeum triangular-shaped.Holotype ♀,China,The Nei Monggol Autonomous Region,Helan Mountain,South of Shuimogou（38.9°N,105.8°E） ,1 Aug.2010,ZHANG Ding-Jie.Paratype 1♀,China,The Nei Monggol Autonomous Region,Helan Mountain,South of Shuimogou,1 Aug.2010,ZHANG Ding-Jie.Etymology.The name neimengensis means that the holotype has found at Inner Mongolia,China.