Title: A NEW GENUS AND TWO NEW SPECIES OF ORTHOPTERA FROM XIZANG
Abstract: This paper reports a new genus and two new species of grasshoppers from Xizang.Type specimens are preserved in the College of Life Sciences,East China Normal University.Rectimargipodisma gen.nov. Size median.Head large,shorter than pronotum;vertex sloping forward,interocular distance narrow;frontal ridge sulcate,between eyes distinctly rounded prominent.Eyes elliptical,longitudinal diameter of eyes 1.40-1.45 times its horizontal diameter,and 1.4-1.9 times the subocular furrow.Pronotum cylindrical,anterior margin and posterior margin straight;median keel well developed,cut by three sulci,lateral keels absent;length of porozona 1.5(♂)-2.1(♀)times its metazoan;prosternal spine conical,apex pointed.Elytra very small,round,reaching the middle of mesonotum,hind wing absent.Median keel of upper side of hind femur smooth,top of lower kneelobe rounded.Hind tibia without outer apical spine.The last tergite of male with small triangular furcula;curcus long,incurvate,top round.Subgenital plate of female nearly square,hind margin with a triangular projection. Type species:Rectimargipodisma medogensis sp.nov. This new genus is allied to Indopodisma Dov.-Zap. and Pedopodisma Zheng, but differs from both in:1)frontal ridge distinctily prominent between eyes;2)hind margin of poronotum straight; 3)with triangular furcula;4)top of curcus rounded;5)top of elytra reaching the middle of mesonotum.Rectimargipodisma medogensis sp.nov.(Figs.1-7) The back of body brown green,ventral side ochreous.Frontal ridge ochreus,ocular band black.Back of pronotum brown green,upper part of lateral lobe with wide longitudinal black band,lower part ochreous.Fore and middle leg ochreous green;outer side of hind femur orange red,with two dark brown transverse bands,inner and lower sides orange red,knee black,with a light ring near the knee;base of hind tibia black,near the base and end of tibia yellow,middle dark green.Lateral side of first to fourth segments of abdomen with a wide black band. Length of body:♂22?mm,♀27?mm.Length of pronotum:♂4.5?mm,♀5.5?mm.Length of elytra:♂0.2?mm,♀0.3?mm.Length of hind femur:♂13?mm,♀15.5?mm. Holotype ♂,Xizang:Medog(Damu)(29°2′N,95°3′E),1?350?m,22 June 2002,collected by GUO Guang-Pu and WU Peng-Ju.Xenocatantops acanthraus sp.nov.(Figs.8-12) This new species is allied to Xenocatantops humilis(Serville),but differs in: 1)prosternal spine slender conical,top point;2)length of middle segment 3.3 times its width;3) length of hind femur 4.9 times its width;4) top of inner kneelobe sharp angular. ♀.Length of body 28.0-28.5?mm,length of pronotum 6.2-6.4?mm,length of elytra 24.0-24.5?mm,length of hind femur 16.8-17.0?mm. Holotype ♀,Xizang,Medog(29°2′N,95°3′E),1?010?m,21 Dec. 2001,collected by GUO Guang-Pu and WU Peng-Ju;paratype 1♀,other data as holotype.Xistra laticorna Zheng,1988 Female,first discover (Figs.13-14) Xistra laticorna Zheng,1988.Insects of Mt.Namjagbawa Region of Xizang,48,49.♀.Length of body 9?mm,length of pronotum 9?mm,length of hind femur 4.5?mm. Material examined.1♂,1♀,Xizang,Medog(Xirang),900?m,19 May 2000,collected by GUO Guang-Pu and WU Peng-Ju.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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