瘰螈属(有尾目,蝾螈科)一新种

A NEW SPECIES OF THE GENUS PARAMESOTRITON (CAUDATA,SALAMANDRIDAE)

基于形态学差异、核POMC和线粒体序列分子数据,把分布于武陵山系的尾斑瘰螈种群定名为1新种,武陵瘰螈Paramesotriton wulingensis,其区别于尾斑瘰螈雷山种群(地模标本)鉴别特征为:1)新种体色较深,呈黑褐色,体背面疣粒较大,背脊隆起较低,尾斑瘰螈雷山地模标本体色较浅,呈棕黄色,体背面疣粒较小,背脊隆起较高;2)新种鼻突中间骨缝较深,尾斑瘰螈雷山地模标本鼻突中间骨缝较浅;3)新种前额骨与鼻骨相连的骨缝线呈波浪型,尾斑瘰螈雷山地模标本前额骨与鼻骨相连的骨缝线左右两侧呈明显"Λ"型;4)新种额鳞弧鳞骨直立前伸且背面观前粗后细,尾斑瘰螈雷山地模标本额鳞弧鳞骨水平前伸且背面观弧前后粗细一致;5)新种翼骨前枝较长达到上颌骨后缘,尾斑瘰螈雷山地模标翼骨前枝较短不到上颌骨后缘。

Paramesotritoncaudopunctatus populations distributed the Wuling Mountainswere named a new species, Paramesotriton wulingensis, based on morphological differences, nuclear POMC and mitochondrial sequence molecular data, distinguished theLeishan population of Pcaudopunctatus （topotype） by the following characters： 1） body color is deeper, appearing as dark brown; tubercules of the body back are bigger; apophysis of dorsal ridges is lower for the new species; body color is lighter, brownish yellow; tubercules of the body back are smaller; apophysis of dorsal ridges is higher for the Leishan topotype of P caudopunctatus; 2） the suture in the middle of nose protrusion is deeper for the new species （versus shallower in the Leishantopotype of Pcaudopunctatus）;3） the suture lines connected to the prefrontal with the nasal is wavy for the new species（versus left and right sides were significantly a ＂Λ＂ in the Leishantopotype of Pcaudopunctatus）; 4） for the new species, the squamosal of forehead-squamosal arc vertical reach and the front is crude and the back is finefrom dorsal view （versus horizontally reach and the thickness of the front and the backis the same from dorsal view in the Leishantopotype of Pcaudopunctatus）; 5） the frontal branch of pterygoid are longer and arrive at the posterior edge of maxillary for the new species （versus shorter and don＇t arrive at the posterior edge of maxillary in the Leishantopotype of Pcaudopunctatus）.