甲腹茧蜂属二新种及一新纪录种(膜翅目:茧蜂科:甲腹茧蜂亚科)

Two new species and a new record of genus chelonus(hymenoptera: braconidae)

记述了甲腹茧蜂属2新种:弯脉甲腹茧蜂Chelonuscurvinerviussp.nov.,与Ch.annulatusNees,1813相似,但有以下不同:新种后足基节具皱纹(后者光滑或有微弱的皱纹);径脉第1段长于第2段及第2肘间横脉,第3段约为第2段的4倍,径室前缘短于翅痣(后者三段相等,第3段约为第2段的3倍,径室前缘与翅痣等长);颊为复眼纵径的1/3(后者略小于1/2);足色不一样.二色甲腹茧蜂Chelonusbicolorussp.nov.,与Ch.sochiiTobias1986相似,但新种雌性腹部端部黑色(后者棕色);触角22节,基部10节黄色(后者25节,基节黄红色);翅痣棕色,无红色边缘(后者有红色边缘);腹甲扁平,向端部不增厚(后者腹甲下方稍折入);1中国新纪录:华美甲腹茧蜂ChelonusdecorusMarshall1885.

Two new species of the genus Chelonus are recorded. Also the species Ch. decorus is first recorded in China. All type specimens are kept in college of life science, Shaanxi Normal University. Chelonus curvinervius sp. nov. (Fig.1). The new species is similar to Ch.annulatus Nees 1813, but can be distinguished from the latter by the following characters: hind coxa regulated;r1 longer than r2 and cuqu 2, r3 4 times long r2,stigma equal length of Radial cell;cheek 1/3 long of longer diameter of eye;color of leg difference.Type material. Holotype ♀,Longxian ,Shaanxi, 19900814, by He Jianping. Paratypys. 6♀♀, 3♂♂,19900814, by He Jianping and She Jianjun;1♀,Meixian,Shaanxi, 19900829,by She Jianjun.Chelonus bicolorus sp. nov. (Fig.2)The new species is near to Ch. sochii Tobias 1982, however, different by the combination of the following features: Apical part of carapace black in female;Antennae 22 joints,basal 10 joints yellow;stigma brown without red margin;carapace flat not fold to inferior.Type material. Holotype ♀,Liuba ,Shaanxi, 19900822, by She Jianjun; Paratypys. 1♂,Liuba,Shaanxi, 19900823, by He Jianping. Chelonus decorus Marshall 1885; Chelonus decorus Marshall,1885 Trans. R. Ent. Soc. Lond. 1885:128; Chelonus decorus Fahringer 1934 Opusc. Bracon.3:481; Chelonus decorus Telenga 1941 Fauna SSSR 5(3):273; Chelonus decorus Shenefelt 1973 Hymenopterarum Catalogue 10(6):849; Is new record to China.Material examined:2♀♀,Liuba ,Shaanxi, 19900822, by He Jianping; 1♀,1♂Liuba,Shaanxi, 19900823, by He Jianping and She Jianjun.