中文摘要：

宽额甲属Ascelosodis Redtenbacher,1868是青藏高原喜马拉雅地区的1个特有类群,迄今已记录25个物种.本文报道来自西藏的2个新种,分别是直缘宽额甲A.rectus sp.nov.和聂拉木宽额甲A.nyalamensis sp.nov.,并给出2新种的形态特征描述、形态特征图及其与近缘种的示差鉴别.

英文摘要：

Two new species of the genus Ascelosodis Redtenbacher, 1868,A. rectus sp. nov. and A. nyal- amensis sp. nov. ,are described and illustrated from the Chinese Himalayas,and new faunistic data for 27 known species are added. Aseelosodis rectus sp, nov. （Figs. 1,2） The new species resembles Ascelosodis schrnidi Kaszab, 1965, with the following differences： anterior margin of clypeal lobe weakly sinuate;genae gradually wider before eyes;pronotum with anterior angles ob- tuse,rounded apically and with anterior margin shortly prominent in the middle; the fifth abdomen exten- ding the end straight. Etymology：Named after the fifth abdomen extending the end straight. Holotype： ,China,Tibet,Lhaz,Cuola Mountain,28-53. 959＇N,87-25. 182＇E;alt. 5 064 m,2 August 2011,collected by Ren Guodong. Paratypes：16 - 274 ,same data as the holotype. Aseelosodis nyalamensis sp. nov. （Figs. 3,4） The new species resembles A. ernarginata Ren Shi, 2006, with the following differences： Sides of prothorax and elytra with very sparsely ciliate beneath; pronotal surface with coarse punctures, slightly denser on disc than on sides and rugae between disc and sides; elytra base with obscure but finely entirebordered;Elytra surface with sparsely and obscurely shallow punctures. Etymology： Named after the type locality. Holotype： China,Tibet,Nyalam,Mainpu,Tulong,28-25. 841＇N,86-08. 840＇E,Alt. 4 478 m,30 July 2014,collected by Ren Guodong. Paratypes： 1♂3♀ , collected by Ren Guodong,Bai Xinglong and Shan Junsheng,same data as the holotype.