中国登姬蜂属(膜翅目,姬蜂科)及一新种记述

THE GENUS DENTIMACHUS HEINRICH (HYMENOPTERA,ICHNEUMONIDAE) IN CHINA WITH DESCRIPTION OF A NEW SPECIES

报道中国的登姬蜂属Dentimachus Heinrich,1949及采自江西省官山自然保护区的该属1新种:官山登姬蜂Dentimachus guanshanicus sp.nov.,记述了新种的主要形态特征,指出了与近似种的主要区别并附彩色特征图,编制了该属我国已知种检索表。

A new species belonging to subfamily Ctenopelmatinae of family Ichneumonidae,Dentimachus guanshanicus sp. nov. collected from Jiangxi Province,is described. A key to the species of Dentimachus known in China is provided. Holotype of the new species are deposited in the General Station of Forest Pest Management,State Forestry Administration,Shenyang,China. Dentimachus guanshanicus sp. nov. （Figs 1-3） The new species is similar to D. henanicus Sheng,2009 but can be distinguished from latter in having face,mesopleuron with distinct punctures; propodeum with distinct median longitudinal carina; tergum 2 about 0.6 times as long as its apical width; face black,lower portion with large ＂U＂-shaped yellow fleck. D. henanicus Sheng：face with fine granulose texture,very weak and unclear punctures; propodeum without median longitudinal carina; tergum 2 about 0.9 times as long as its apical width; face entirely yellow. Holotype ♀,Guanshan,415 m,Jiangxi Province,7 May 2010,coll. SUN Shu-Ping. Etymology. The species name is derived from the locality of type. Dentimachus henanicus Sheng,2009 Dentimachus henanicus Sheng,2009. Insect Fauna of Henan,Hymenoptera,Ichneumonidae. P. 126. Specimen examined. 1♀,Baotianman Natural Reserve,1 300 m,Neixiang,Henan Province,11 July 1998,SHENG Mao-Ling. Dentimachus pallidimaculatus Kaur,1989 Dentimachus pallidimaculatus Kaur,1989. Oriental Insects,23：295. Specimens examined. 3♂♂,Ji＇an,Jiangxi Province,21 May to 15 June 2008; 1♂,Zixi,400 m,Jiangxi Province,1 May 2009,LOU Mei-Juan. Dentimachus rufiabdominalis Kaur,1989 Dentimachus rufiabdominalis Kaur,1989. Oriental Insects,23：296. Specimens examined. 1♀,Quannan,700 m,Jiangxi Province,24 May 2008,LI Shi-Chang; 1♀,Zixi,Jiangxi Province,22 May 2009,LOU Mei-Juan; 1♂,Quannan,628 m,Jiangxi Province,4 May 2008,LI Shi-Chang; 2♂♂,Ji＇an,174 m,Jiangxi Province,10 May 2009,1♂,Guanshan,400-450 m,Jiangxi Province,22 June 2010,LI Yi. Key to species of genus Dentimachus Heinrich known in China. 1. Terga of metasoma black,posterior margins of each tergum yellowish brown narrowly or posterior margins of apical terga white2 Terga 2 to 4 mostly or entirely yellow to taupe; others are not entirely as above3 2. Propodeum without median and lateral longitudinal carinae; first tergum very evenly widened forward apical portion; spiracle scarcely convex; nervellus intercepted at lower 1/3D. henanicus Sheng Propodeum with median and lateral longitudinal carinae; postpetiole of first tergum strongly convex and widened,spiracle strongly convex; nervellus intercepted at lower 1/5D. guanshanicus sp. nov. 3. Nervulus distad of basal vein,distance between them 0.2 times as long as nervulus; first tergum about 2.5 times as long as its apical width; hind femur 4.0 times as long as its maximal widthD. pallidimaculatus Kaur Nervulus opposite basal vein; first tergum 2.2 times as long as its apical width; hind femur about 5.0 times as long as its maximal widthD. rufiabdominalis Kaur