侧沟茧蜂属一新种和一新记录种(膜翅目 :茧蜂科 :小腹茧蜂亚科 )

A new species and a new record of Microplitis Foerster from China (Hymenoptera:Braconidae:Microgastrinae)

记述采自吉林省、辽宁省和浙江省的侧沟茧蜂属MicroplitisFoerster一新种 ,棉铃虫侧沟茧蜂Microplitishelicoverpaesp .nov .和采自辽宁、吉林和河南的中国一新记录种 。

Two species,belong to Microplitis Foerster,of the family Braconidae are dealt with in this paper.Among them one species, Microplitis helicoverpae ,is described as new to science;the other species, Microplitis albotibialis Telenga,is first recorded in China. Microplitis helicoverpae Xu et He,sp. nov.(Figs.1～2) Male:Head in dorsal view behind eyes distinctly broadening.and 2 2 times as wide as long. Frons,vertex and upper temples smooth except for micropunctres.OD∶APOL∶POL∶OOL=3∶3∶7∶8.Penultimate segment of antenna 3 times as long as wide.Mesoscutum mostly smooth and shiny;notauli slightly indented,and the area where notauli meet posteriorly broad and smooth except for some weak sculptures,is devided by a short medial lonitudinal carina;dorsal scutellum smooth and shiny.1 R1 about 3/4 the length of stigma;r∶width of stigma∶2 SR=8∶11∶8;areolet similar to 3 sided;1 CU1 0 36 times as 2 CU1.T1 moderately broadening,1 7 times as long as the greatest width.T2 as long as T3,smooth. Body black.Antenna blackish brown;tegula black;coax black,fore and mid legs reddish yellow but tarsi infuscate,hind leg reddish yellow but apical fumur blackish;metasoma reddish yellow with some darkenings except black T1.Wings deeply infuscate,the color paler apically,stigma uniformly blackish. This species is closely related to Microplitis crassifemoralis Alexeev,but differs from the latter as follows:wings deeply infuscate;1 R1 about 3/4 the length of stigma;tegula black;stigma uniformly black;metasoma reddish yellow with some darkenings except black T1. Length:♂ 4 3～4 7 mm Holotype:♂ Baoding (38 8°N.,115 5°E.),Hebei Province,collection date unkown,by Wang De an,No.911029.Paratype:5♂♂,the same as holotype.All specimens deposited in Zhejiang Agricultural University.♀:unkown. Microplitis albotibialis Telenga,1995 Specimens:1♀2♂♂,Dalian,Liaoning Prov.,Aug.16,1994,Lou Ju xian,Nos.952373,953754,952148;2♀♀,Fuxin,Liaoning Prov.,July 16 23,1995,Lou Ju xian,Nos.961216,961420;2♀♀,Shenyang,Liaoning Prov.,July 10,1994,June July,1995,Lou Ju xian,Nos.947402,960295;1♀1♂,Changchun,Jilin Prov.,July 23,1992,Lou Ju xian,Nos.951036,951063;1♀,Luanchuan,Henan Prov., July 14,1997,Chen Xue xin,No.970028;1♀,Songshan, Henan Prov., July 11 18,1997,Cai Ping,No.970006.