中国网翅蝗科二新种记述(直翅目:蝗总科)

Two new species of Arcypteridae from China(Orthoptera:Acridoidea)

记述采自陕西及西藏地区网翅蝗科蝗虫二新种,即秦岭异爪蝗Euchorthippus qinlingensis sp.nov.及黑膝雏蝗Chorthippus fusigeniculatus sp.nov..秦岭异爪蝗近似于邱氏异爪蝗Euchorthippus cheui及绿异爪蝗Euchorthippus hebaceus,其区别于二者为:1)前翅缘前脉域具闰脉;2)前翅中脉域与肘脉域等宽;3)雄性尾须细长弯曲,超过肛上板顶端;4)雄性下生殖板长锥形,顶圆;5)后足股节上膝侧片黑色;而又区别于邱氏异爪蝗为:1)前胸背板沟前区侧隆线略弯曲;2)不具宽的黑色眼后带;而又区别于绿异爪蝗为雌性前翅前缘脉域具一白色纵纹.黑膝雏蝗近似于呼城雏蝗Chorthippus huchengensis及郑氏雏蝗Chorthippus zhengi,其区别于二者为:1)前胸背板侧隆线间最宽处为最狭处宽的2.4倍;2)雄性中胸腹板侧叶间中隔最狭处宽为长的1.6倍;3)雄性前翅中脉域宽为肘脉域宽的6倍;而又区别于郑氏雏蝗为:1)前胸背板沟前区与沟后区等长;2)后足股节膝部黑色.模式标本保存于陕西师范大学动物研究所昆虫标本室.

In the present paper, two new species of Arcypteridae are described. The typical specimens are deposited in the Institute of Zoology, Shaanxi Normal University. 1. Euchorthippus qinlingensis sp. nov. This new species is allied to Euchorthippus cheui Hsia, 1965 and Euchorthippus herbaceus Zhang et Jin,1985. It differs from both in： 1） precostal area of elytra with intercalary vein; 2） width of medial area as wide as cubital area; 3） cercus of male long and curved, reaching over the top of anal plate; 4） subgenital plate of male long conical, top rounded; 5） upper kneelobe black. It differs from the former in： 1） lateral keels of prozona slightly curved; 2） without dark ocular band. It also differs from the latter by the costal area of female with a white stripe. Length of body. ♂ 14-15.5 mm, ♀ 22-23.5 mm. Length of elytra. ♂ 13.5-15 mm, ♀ 15-18 mm. Length of hind femur. ♂10-10.5 mm, ♀ 13-13.5 mm. Holotype ♂ , Shaanxi. Fengxian, 106°6′E, 33°9′N, 16-Sept.-2007, collected by Meng Jiang-hong; paratypes 1 ♂ 3 ♀, same data as holotype. 2. Chorthippus fusigeniculatus sp. nov. This new species is allied to Chorthippus huchengensis Xia et Jin, 1982 and Chorthippus zhengi Ma et Guo, 1995. It differs from both in.. 1） maximum width of lateral keels of pronotum 2.4 times its minimum width; 2） width of interspace of mesosternal lobes of male 1.6 times its length; 3） width of medial area of male 6 times the width of cubital area. It also differs from the latter in. 1） length of prozona as long as metazoan; 2） kneelobe of hind femur black. Length of body. ♂ 14 mm, ♀ 20 mm. Length of elytra： ♂ 13 mm, ♀ 15 mm. Length of hind femur. ♂8 mm, ♀ 11 mm. Holotype ♂ , Xizang. Qamdo, 97°3′E, 31°11′N, 16-Sept.-2007, collected by Tang Hong; paratype 1♀, same data as holotype.