西藏东南部棘蛙属一新种记述(两栖纲：蛙科)

对产于西藏东南部察隅和墨脱的察隅棘蛙通过形态特征和数值分类作了进一步比较研究，结果认为：产于察隅的察隅棘蛙是一个有效种，而产于墨脱的标本应为一个新种，即墨脱棘蛙Paa medogensis sp.nov.。

A NEW SPECIES OF THE GENUS PAA FROM SOUTHEAST XIZANG, CHINA (AMPHIBIA: RANIDAE)

Spiny frogs from Hengduan Mountains and Himalayas of China,i.e. types of Paa chayuensis from Chayu and Medog, southeast Xizang (Tibet) are studied. The results indicate that Paa chayuensis from Chayu is a valid species which differs from Paa arnoldi Dubois; Paa chayuensis from Medog differs from that one in Chayu and any of other described species of genus Paa. Therefore Paa chayuensis from Medog is considered as a new species, Paa medogensis sp.nov. Paa medogensis Fei and Ye, sp. nov. 　　Holotype: CIB8370106, adult male (SVL 79.0 mm), collected at Medog, Xizang (ca: 29°22′N，95°35′E)，in China, alt. 1 100 m, on July 19, 1983, by LI Sheng\|Quan. 　　Paratypes: Nine adult males (CIB73II0013，0018，8370105，8370134，8370139～141，8370147～148), 4 adult females (CIB73II0010～12，8370100), four subadults and some tadpoles collected at Maniweng, Medog, alt. 1?000～1?100 m, on July 16, 1973 and on July 19, 1983. One adult female (CIB7430080) from Hanmi, Medog, alt. 2 100 m, on August 23, 1974; three adult females CIB8370024～25, 8370149 collected at 62th km. from Medog to Bomi, on July 19, 1983. 　　Diagnosis: This new species Paa medogensis is closely similar to Paa chayuensis, but it is distinguished from the latter by the following characters: ①larger body size, snout-vent length(SVL) of adult males 62～79 mm (mean 71 mm), SVL of adult females 71～114 mm (mean 86 mm); ②anterior 2/3 part of body dorsum smoother although with a few elongated warts arranged in longitudinal rows, posterior 1/3 part rough, with many small spine warts; ③throat smooth, without granules; ④the space between two vomerine teeth patches nearly equal to the length of a vomerine teeth patch; ⑤tympanum hidden; ⑥the color of dorsum of living adults dark olive, or with four greenish longitudinal bands; ⑦male chest with two transverse spine groups, each group with about 20 spines. The latter with smaller body size, SVL of adult males 52～65 mm (mean 58.5 mm), that of adult females 59～80 mm (mean 69 mm); the upper sides of head and body densely covered with round spine warts; throat with round small warts; two vomerine teeth patches mostly touched each other; tympanum small and clear; body dorsum green olive, parts with wart dark olive; male chest with many spines, and appearing two oval patches, each patch with 33～56 spines. 　　The type specimens are kept in Chengdu Institute of Biology, the Chinese Academy of Sciences.