中国蝗虫的新属和新种(直翅目:蝗总科)

NEW GENUS AND NEW SPECIES OF GRASSHOPPERS FROM CHINA (Orthoptera: Acridoidca)

在我国西北和西南地区,采得蝗虫1新属4新种,即新疆蝗属,新属Xin jiangacris gen.nov.,红胫新疆蝗,新种X.rufitivis sp. nov.,黑翅牧草蝗,新种Omocestus nigripenmus sp. nov.,宁夏蛛蝗,新种Aervopedellus nangxiaensis sp. nov.及武陵山金色蝗,新种Chrysacris wulingshanensis sp.nov.

In the present paper,a new genus and four new species of grasshoppers from China are described. Ml type specimens are deposited in the Institute of Zoology,Shaanxi Normal University. Xinjiangacris gen. nov. Size medium. Fastigium, of vertex wide and short, interocular distance wider than frontal ridge between antennae about 2 times j foveola quadrilateral,its length larger than width about 2 times. Frontal ridge wide and flat, lateral facial keels indistinct. Lateral keels of pronotum indistinct in the middle j hind margin nearly round;the length of prozona as long as metazona. Elytra developed,reaching the knee of hind femur,the width of costal area as wide as cubital area,the maximum width of cubital area as long as the minmum width of medial area about 2-2. 2 times. The tip of lower knee-lobes round. The lower spur of inner side of hind tibia as long as upper spur about 1. 3 times. Metasternal lobes wide separate. Tympanal organ developed. Type species: Xinjiangacris rufitibis sp. nov. This new genus is allied to Pararcyptera Tarb. and Ihimburwlla I. Bol. It differs from both by the maximum width of cubital area as long as the minimum width of medial area about 2-2. 2 times. It dif- 6 fers from pararcyptera in : I Materal keels of pronotum indistinct in the middle j2)the lower spur of inner side of hind tibia larger than upper spur about I. 3 times. The new genus differs from Hambuiriflla by the metasternal lobes wide separate. Xinjiaiugacris rufittbis sp. nov. (figs. 1-5) Length of body : 19-20 mm, length of pronotum 3. 5-4 mm,length of elytra: 12. 5-13 mm,length of hind femur: 1 1-1 2mm. HolotypeJ ,Paratype 1, ,Xmjiang:Yining,'MN,823'E,7. VIII. 1989,Xi Bixia. 3 Omocestus nigripennus sp. nov. (figs. 6-7) This new species is allied to Omocestus wttirnlis(Zett. ),but differs in : 1 )the maxillary palpi and labial palpi all black brown;2)hind wing black:3)hind tibia black brown. Length of body: 12 mm,length of pronotum : 2. 5 mm, length of elytra : 9mm. length of hind femur: 8mm. Holotype ,t ,Gansu :Yongchang,383'N , I 02E,3. IX. 1981 .Zheng Zhemin. A AervptdeUus iimgxiueiisis sp. nov (figs. 8-13) This new species is allied to Aeroi/c-dclius volyensis(predl. ),but differs in: I )the width of anterior margin of pronotum about !. 3-1 times of the minimum width between the lateral keels;2)elytra reach ing the knee of hind femora; 3)thc width of arolium as wide as the width of claw about 2 times;--Ohind margin of subgenital plate of female sharp triangular; 5)size larger. Length of body: 20mm, length of pronotum :1mm , length of elytra: - I 3mm,length of hind femur: 1 3mm. Holotype- .Ningxia :Guyuan(Heshangpu) ,357'N, I 063'E, 1. VIII. 1980,Zheng Zhemin. 5 Clrrysacris unalingshanensis sp. nov. (figs.12-15) This new species resembles C/irysatns qintinqen.tis Zheng,distinguished by the following characters; I) longitudinal diameter of eye epual to subocular sulcus;2)in female,the width of costal area is 1.5 times of the median area and the width of cubital area as wide as median area about 1. 8 times;3) upper valvus of ovipositor longer than lower valvus; -1 )hind margin of subgenital phte of female sharp round. Length of body: 34mm ,length of pronotum : 6mm,length of elytra : 21mm .length of hind femur: 18mm. Holotype ,Guizhou : Jiangkou(Fanjingshan) , 278'N, I 086'E,30. VI. 1986,Luo Taichang.