中国小腹茧蜂属二新种记述 (膜翅目,茧蜂科,小腹茧蜂亚科)(英文)

TWO NEW SPECIES OF MICROGASTER LATREILLE FROM CHINA(HYMENOPTERA, BRACONIDAE, MICROGASTRINAE)

记述了采自黑龙江、吉林、辽宁和湖北省小腹茧蜂属MicrogasterLatreille,180 42新种 ,短管小腹茧蜂M .breviterebraesp .nov .和长距小腹茧蜂M .longicalcarsp .nov .。短管小腹茧蜂M .breviterebraesp .nov . (♀ )与M .grandis相似 ,但以下特征可以区别 :1)翅痣下方具暗斑(后者无 ) ;2 )触角端前节长为宽的 1 2倍 (后者为 2倍 ) ;3 )头顶光滑 (后者具皱纹 ) ;4)腹部第 3背板光滑 (后者具皱状刻点 ) ;5 )后足胫节黑色 (后者红黄色 )。采自黑龙江镜泊湖、吉林长春、辽宁 (阜新、大连、沈阳 )。长距小腹茧蜂M .longicalcarsp .nov . (♀ )与短管小腹茧蜂M .breviterebraesp .nov .相似 ,但以下特征可以区别 :1) 1 RS脉长为 1 M脉 1/ 2 (后者为 1/ 3 ) ;2 )r脉与翅痣宽等长 (后者明显短于翅痣宽 ) ;3 )后足胫节内距长为基跗节 6/ 7(后者为 1/ 2 ) ;4)产卵管鞘长为后足胫节 1/ 2 (后者为 1/ 3 ) ;5 )前后单眼间距与单眼直径等长 (后者短于单眼直径 )。采自湖北房县。本文附中国小腹茧蜂属分种检索表。

The present paper describes two new species of Microgaster Latreille, 1804, recorded in China. viz: M. breviterebrae (♀) and M. longicalcar (♀). M. breviterebrae is described from Heilongjiang, Jilin and Liaoning Provinces and is closely related to M. grandis, but differs from the latter in the combination of the following features: 1) fore wing with a dark spot beneath stigma; 2) penultimate joint of antenna 1.2 times as long as wide; 3) vertex smooth; 4) tergite 3 polished; 5) hind femur black. M. longicalcar is described from Hubei Province and is closely related to M. breviterebrae, but differs from the latter in the combination of the following features: 1) 1-SR of fore wing almost 0.5 times as long as 1-M; 2) r of fore wing as long as the width of stigma; 3) inner spur of hind tibia 0.86 times as long as basitarsus; 4) the hairy part of ovipositor sheath 0.5 times as long as hind tibia; 5) OD as long as APOL. A key to Chinese species of Microgaster Latreille is provided. The type specimens are deposited in Zhejiang University, Hangzhou, China.