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短脉纹石蛾属(毛翅目:纹石蛾科)广西3个新种记述
Three new species of Cheumatopsyche(Trichoptera:Hydropsychidae) from Guangxi,China
【摘要】 记述了广西短脉纹石蛾属3个新种,即刺尾短脉纹石蛾(Cheumatopsyche acanthus,n.sp.)、微凹短脉纹石蛾(C.concav-iuscula,n.sp.)和平尾短脉纹石蛾(C.orthocercata,n.sp.)。刺尾短脉纹石蛾与产于越南的金短脉纹石蛾(C.kimOláh&Jo-hanson)较为接近,但其第10节侧面观上下缘近平行,中叶呈尖刺状,侧叶明显宽于中叶;内茎鞘突长卵圆形;下附肢第2节细而直;可与后者区别。微凹短脉纹石蛾与产于福建的挂墩短脉纹石蛾(C.guadunicaLi)相似,但其第10节侧面观较长,约为其高的2倍;阳具腹面观由基部向端部逐渐变细,并在其最端部略加粗;阳具内茎鞘突侧面观近三角形;下附肢第2节侧面观基部2/3粗大,端部1/3细窄,并略向上弯曲,上缘具一细微凹切;可与后者区别。平尾短脉纹石蛾与产于越南的伊氏短脉纹石蛾(C.ecsediiOláh&Johanson)相似,但第10节侧面观略呈四边形;阳具侧面观内茎鞘突略呈四边形,且其下缘略向上切入;下附肢第2节明显窄于第1节端部;可与后者区别。模式标本保存于南京农业大学昆虫标本馆。
【Abstract】 Three new species of Cheumatopsyche from Guangxi Zhuang Autonomous Region are described and illustrated:C.acanthus,n.sp.,C.concaviuscula,n.sp.and C.orthocercata,n.sp..Species C.acanthus,n.sp.is similar to C.kim Oláh & Johanson from Vietnam,but it can be distinguished from the latter by the parallel upper and lower margins of segment Ⅹ in lateral view;endothecal process in lateral view is elongated oval;and the second joint of each inferior appendage is slender and straight.C.concaviuscula,n.sp.is close to C.guadunica Li from Fujian,China,but it can be distinguished from the latter by the length of segment Ⅹ about twice its height in lateral view;phallic apparatus is tapering from base to distal end;endotheca process in lateral view is somewhat triangular;the second joint of each inferior appendage is narrowed suddenly at distal 1/3.C.orthocercata,n.sp.is close to C.ecsedii Oláh & Johanson from Vietnam,but differs from it in that segment Ⅹ and endotheca process in lateral view are quadrilateral;the latter bears with a shallow excision at its lower margin;the second joint of each inferior appendage is obvious narrower than the distal end of the first joint.The type specimens are deposited in Insect Museum of Nanjing Agricultural University.
【Key words】 Hydropyschidae; Cheumatopsyche; new species; Guangxi; China;
- 【文献出处】 南京农业大学学报 ,Journal of Nanjing Agricultural University , 编辑部邮箱 ,2011年01期
- 【分类号】Q969.411.5
- 【下载频次】201