甲腹茧蜂属二新种记述(膜翅目:茧蜂科:甲腹茧蜂亚科)

Two new species of genus Chelonus Jurine(Hymenoptera: Braconidae: Cheloninae)

记述了采自陕西的甲腹茧蜂属 (ChelonusJurine 1 80 1 )二新种 :1 .大齿甲腹茧蜂Chelonusmajusdentatussp .nov .,与Ch .SubannulatusAbd .相似 ,但通过以下特征可以区分 :触角 2 8节 ;颊短于复眼纵径之半 ;径脉第一段与第二段相等 ,小脉从第一盘室基部 1 /3处发出 ;后足股节长为宽的 4倍 ;产卵器长 ,伸出腹腔外 .2 .巨斑甲腹茧蜂Chelonusgrandipunctatussp .nov .,与Ch .obscuratusH Sch 1 838相似 ,但有以下不同 :颜面具有中纵脊 ;颊短于复眼纵径之半 ,上颊窄于复眼横径 ;腹部黄斑大、矩形 ;足的基节、转节、股节基部、后胫节端部均为红黄色 .模式标本保存在陕西师范大学生命科学学院 .

The present paper deals with two new species of the genus Chelonus: Chelonus majusdentatus sp. nov. and Chelonus grandipunctatus sp. nov, model samples are kept in College of Life Science, Shaanxi Normal University.1. Chelonus majusdentatus sp. nov. It is closely allied to that of Ch.subannulatus Abd. but can be distinguished from the latter by the following characters: Its antenna 28-joints; cheek shorter than 0.5 times long diameter of eye; r 1=r 2,n issuing from d at its third; longer diameter is 4 times shorter diameter of hind femur, Ovipositor is long and extended outside the abdominal cavity. Type material: Holotype:♀, Changan,Shaanxi,1982-08-22,Wang Jiaru. Paratypys: 1♀,3♂♂, Changan,Shaanxi,1982-08-22, Wang Jiaru. 2. Chelonus grandipunctatus sp. nov. It is similar to Ch. obscuratus H-Sch.1838, however, differing by the combination of the following features: face with medially longitudinal keel; cheek shorter than 0.5 times longer diameter of the eye, shorter diameter of eye longer than tempora; two big spots of carapace; coxa,trochanter, base of femur, apex of hind tibia are all reddish yellow. Type material: Holotype:♀,Liuba, Shaanxi, 1990-08-21, He Jianping. Paratypys: 1♀, 3♂♂,Liuba,Shaanxi, 1990-08-21, He Jianping.2♂♂, Liuba, Shaanxi, 1990-08-23,He Jianping.1♂, Longxian, Shaanxi 1990-08-16, She Jianjun.