北京寄生菜粉蝶的盘绒茧蜂种类鉴定

Identification of a Cotesia species parasitizing on Pieris rapae from Beijing

1979—1980年,中国从加拿大引进微红盘绒茧蜂(Cotesia rubecular(Marshall))防治菜粉蝶(Pieris rapae L.),尔后,北京寄生菜粉蝶的一个土著种被误定为微红盘绒茧蜂。进一步检查两国的盘绒茧蜂标本,认为虽然两者形态相似,但仍有很明显的不同,差异在于前翅翅痣及后翅后肘室形状、雄性外生殖器抱器背突形状、齿数、阳茎基侧突形状等。为此,将北京菜粉蝶幼虫育出的盘绒茧蜂定名为拟微红盘绒茧蜂(Cotesia sp.(nr.rubecula Marshall))。

A biological control programme against Pieris rapae L.（Lepidoptera,Pieridae） in China made release of Cotesia rubecula（Marshall） imported from Canada in 1979 1980.A native species Cotesia sp.which is solitary endoparasitoids of Pieris rapae in Beijing has been misidentify to C.rubecula by Hu et al.since 1981.We further examined specimens of Cotesia sp.and C.rubecula.We recognize that C.rubecula and Cotesia sp.are difference species,and the both species are very similar.But there is a large discrepancy in the structure of stigma of fore wing,submarginal cell of hind wing,the morphological characters of digitus（form,teeth numbers） and parameral plate（form） of male genitalia.In this paper the specimens which were collected from Beijing were identified as Cotesia sp.（nr.rubecula Marshall） by authors.