阔柄跳小蜂属一新种及二中国新记录种记述(膜翅目:跳小蜂科)

Description of a New Species and Two New Record Species of Metaphycus Mercet(Hymenoptera: Encyrtidae) from China

记述采自中国东北地区的阔柄跳小蜂属1新种及2中国新记录种。新种长索阔柄跳小蜂Metaphycus longifuniculus,sp.nov.育自辽宁省普兰店槲栎Quercus alien上的栎绛蚧Kermes sp.;纯黄阔柄跳小蜂Metaphycusalbopleuralis(Ashmead)育自黑龙江省哈尔滨市糖戚盔蚧Parthenolecaniumcorni(Bouche)、槐花球蚧Eulecanium kuwanai(Kanda)和吉林省长春市榆树上的1种蚧虫;软蚧阔柄跳小蜂Metaphycus insidiosus(Mercet)育自黑龙江省尚志市刺五加上的1种软蚧。模式标本保存于东北林业大学昆虫标本室。

The present paper reports a new species,Metaphycus longifuniculus Li,sp.nov. and two new record species,Metaphycus albopleuralis（Ashmead）and Metaphycus insidiosus（Mercet）from China.All the type specimens are deposited in the Insect Collection of Northeast Forestry University,Harbin,Heilongjiang,China.Metaphycus longifuniculus Li, sp. nov. （Figs. 14~20） The new species is similar to M. tenuicornis （Timberlake）, but can be distinguished from the latter by the following characters. The new species with thepedicel shorter than all the funicle segments, while the latter with pedicel longer than the first funicle segment; the new species with ocelli arranged into an obtuse triangle, while the latter with ocelli arranged into an acute triangle; the new species with the exerted part of ovipositor about half as long as gaster, while the latter with the exerted part of ovipositor about one fourth of gaster. The new species is also similar to Chinese species M. longicaudae （Shi, Si ＆ Wang）, M. flavus （Si, Shi ＆ Wang） and M. longipedicellus （Si, Shi ＆ Wang）, but also can be distinguished by the above combination of characteristics. Holotype： ♀（E9406-07）, 05-Ⅵ-1994, reared from Kermes sp. on Quercus alien, Pulandian, Liaoning Province, LI Cheng-de and LI Juan; Paratypes： 11♀♀, 7♂♂, same data as holotype.