跳甲亚科昆虫中国一新纪录属及一新种(鞘翅目,叶甲科,跳甲亚科)

记述了中国1新纪录属喜山跳甲属Microcrepis Chen及1新种M.laevigata Wang et Ge,sp.nov.,模式产地为云南泸水。该属此前已记录9种,均分布于喜马拉雅山脉高海拔地区,是一个典型的高山型属,我国一直无分布报道。本文给出了该属世界已知10种的名录、分布、检索表及新种记述。新种模式标本保存于中国科学院动物研究所。

NEW RECORD GENUS MICROCREPIS CHEN FROM CHINA,ANDDESCRIPTION OF A NEW SPECIES(COLEOPTERA,CHRYSOMELIDAE,ALTICINAE)

The genus Microcrepis Chen is a typical alpine genus which includes 9 species and distributes in Himalaya Mountains until now.In this paper,this genus is recorded new to China,and a new species,M.laevigata Wang et Ge,sp.nov.,from Lushui,Yunnan,is described here.The habitus,male genitalia of the new species are illustrated.The catalogue of the genus and a key to the known species of Microcrepis are also provided here.The type specimens are deposited in Institute of Zoology,Chinese Academy of Sciences,Beijing,China.Microcrepis laevigata Wang et Ge,sp nov.(Figs 1-2) Body broad ovid,apex constrict.Dorsum black,head and thorax more or less paler,sometimes reddish brown.Antennae and legs reddish brown.Head deep depressed into thorax.Vertex convex,shining,without punctures and wrinkles.Frontal tubercles rounded,slightly convex,and distinctly divided from each other.Frons convex,divided two antennal sockets separately.Antennae robust,widen apically,antomere 11 widest,antennomere 1 clavate,base narrow and apex broad;antennomeres 2 to 10 beadlike,subequal in length;antennomere 3 slightly narrow than 2,11 longest.Pronotum broad quadrate,two times broad as long,anterior margin narrow,lateral margin broad,then gradually narrower to posterior margin;anterior angle thicken,trichobotheria present in anterior and posterior angles;disc smooth and impunctate;transversal furrow present near posterior margin,apex with short longitudinal furrow and not arrive in lateral sides.Scutellum triangular,smooth and impunctate.Elytra much wider than prothorax at base,humerus rounded,humeral callus absent;widest at posterior part of humerus,then constricted obviously to apex,apex sharpened;lateral margin present from dorsal view;disc smooth and shagreen,with very fine punctures and unclear irregular striae.Prosternal process very wide,oblong.Prothoracic cavity closed behind.Male genitalia robust,C-shaped,curved from ventral side,shown as Fig.2.Body length 2 mm;width 1.2 mm.Holotype ♂,China,Yunnan,Lushui,Pianma,Fengxueyakou(25.97°N,98.68°E;alt.3 170 m) ,11 May 2011,leg.LIU Wan-Gang.Paratypes 3♀♀,same data as holotype.The new species is similar to M.politus Chen and M.himalayensis(Dberl) ,all of them with transversal furrow of pronotum,but the new species with distinctive characters,such as body black,elytra smooth and with very fine punctures and unclear irregular striae.Etymology.From latin,laevigatus,means dorsum smooth and with unlcear fine punctures.