内蒙古贺兰山曲叶蜂属一新种(膜翅目:叶蜂科)  

A New Species of Emphytus Klug (Hymenoptera: Tenthredinidae) from Mountain Helanshan of Inner Mongolia

作　　者：李泽建[1] 肖炜[1] 魏美才[1] 

机构地区：[1]中南林业科技大学昆虫系统与进化生物学实验室,湖南长沙410004

出　　处：《Entomotaxonomia》2011年第4期312-316,共5页昆虫分类学报（英文）

基　　金：国家自然科学基金项目(30771741;31172142)资助

摘　　要：记述采自内蒙古贺兰山的膜翅目Hymenoptera、叶蜂科Tenthredinidae、平背叶蜂亚科Allantinae 1新种:贺兰山曲叶蜂Emphytus helanshanicus Wei,Li&Xiao,sp.nov.,该种与亚美曲叶蜂E.nigrotibialis Rohwer,1911最近似,但前者后足基节全部、后足第1转节、翅基片全部黑色;额区和中胸前侧片上半部具粗密皱纹和粗大刻点;颚眼距0.8倍于侧单眼直径;后足胫节长于跗节;锯鞘显著长于后足基跗节,鞘端长于鞘基;爪内齿显著短于外齿,不与外齿平行;锯腹片节缝刺毛带中部宽阔连接,锯刃强烈突出;抱器外顶角圆钝;阳茎瓣较短宽。编制了曲叶蜂属中国已知种检索表。A new species of Emphytus Klug of Allantinae is described from Mt. Helanshan of Inner Mongolia. A key to known species of Emphytus Klug from China is provided. The types are deposited in the Insect Collection of Central South University of Forestry and Technology. Emphytus helanshanicus Wei, Li Xiao, sp. nov. （Figs. 1-9） Body length 8 mm. This species is similar to Emphytus nigrotibialis Rohwer, 1911 but differs from the latter in hind coxa entirely, the first trochanter of hind leg, tegula entirely black; the upper half of mesepisternum densely and coarsely punctured and rugose; malar space 0.80 times diameter of lateral ocellus; hind tibia longer than hind tarsus, sheath much longer than hind basitarsus; apical sheath distinctly longer than basal sheath; inner tooth of claw much shorter than outer tooth and distinctly divergent; penis valve; serrulae strongly protruding; annular spines bands broadly meeting at middle; apical corner of harpe round; valviceps of penis valve short and broad （In Emphytus nigrotibialis, the apical third of hind coxa and hind trochanter entirely white; the anterior third to half of tegula white; the lateral parts of the fifth abdominal tergite white; malar space 0.40 times diameter of lateral ocellus; the upper part of mesepisternum weakly punctured or entirely shiny; hind tibia as long as hind tarsus; sheath about as long as hind basitarsus, apical sheath almost as long as basal sheath; annular spine bands broadly separated; serrulae very small and short, hardly protruding; apical corner of harpe acute; valviceps of penis valve longer and narrower）. Holotype： ♀, Ganshuwan, Gulaben, Mt. Helanshan, Inner Mongolia, 38°59.165′N, 106°02.255′E, 2 300 m, 28-Ⅶ-2010, LI Ze-jian, XUE Jun-zhe; paratype： 1♂, Xuelingzi, Yaoba, Mt. Helanshan, Inner Mongolia, 38°40.311′N,105°50.582′E, 2 260 m, 28-Ⅶ-2010, LI Ze-jian, XUE Jun-zhe.

关 键 词：膜翅目 叶蜂科 曲叶蜂属 新种 中国 

分 类 号：Q969[生物学—昆虫学]