西藏聂拉木地区波留宁棘蛙的记述

有关西藏聂拉木的亚东蛙Rana yadongensisWu的分类问题,曾在《西藏两栖爬行动物》(胡淑琴,1987)已有讨论,文中指出聂拉木的标本与亚东者有“变异”,并言:“Dubois(1979)根据地理分布将分布于亚东的亚东蛙作为布兰福棘蛙Rana(Paa) blanfordii Boulenger之异名;分布于聂拉木的标本可能属于波留宁棘蛙Rana(Paa)polunini Smith.”当时由于缺乏尼泊尔的标本对证,该书暂未采用Dubois上述意见.费梁等(1990)将亚东蛙改隶为亚东棘蛙Paa yadongensis.1994年11月和1996年4月我们与法国学者Dubois教授在互访成都和巴黎期间,先后两次共同核查了亚东、聂拉木和尼泊尔3地的标本.

DESCRIPTION OF PAA POLUNINI SMITH (AMPHIBIA: RANIDAE) FROM NYALAM OF XIZANG, CHINA

The specimens, originally named Rana yadongensis (Wu,1977), from Yadong and Nyalam, Xizang(Tibet) were examined and compared with the specimens Specimens of Paa polunini(No.1975.1036 et al.) and Paa blanfordii (No.1975.1266 et al.) in Museum National d'Historie Naturelle,Paris were examined] of topotypes of Paa polunini and Paa blanfordii from Nepal kept in Paris Museum National d'Historie naturelle. The results indicated that Rana yadongensis from Yadong is a synonym of Paa blanfordii and Paa yadongensis from Nyalam is identified as Paa polunini(Smith,1951). Morphorlogical characters of Paa polunini were not reported in literature of China, in this paper its characters are described. Paa polunini (Smith, 1951) Diagnosis. Paa polunini Smith is closely related to Paa blanfordii Boulenger, but differs from the latter as follows:(1) dorso-lateral folds present; (2) skin of back of body and four limbs covered with numerous granules; (3) colour brown above, uniform, back without spots; (4)no cross-bars on dorsal surface of four limbs. Paa blanfordii has: (1) dorso-lateral folds absent; (2) skin of back covered with round warts and glandular ridges; (3) dorsum and lateral sides of body with distinct spots; (4) black crossbars on four limbs.