A New Ranidae Frog Species from Sichuan, China ──Odorrana (Odorrana) nanjiangensis (Ranidae : Anura)

Abstract : A new odor frog Odorrana (Odorrana) nanjiangensis sp. nov. (Holotype: CIB610623, adult male, SVL 59.6 mm) has been recognized based on the collections from Nanjiang County, Sichuan Province in China, which was previously recognized as O. schmackeri. This new species can be distinguished from the latter by the combination of the following characteristics: (1) the sexual dimorphism ratio is smaller in size between males and females of O. nanjiangensis; 1∶1.34 (male to female), males’ mean SVL 55.6 mm, females’ mean SVL 74.6 mm, compared to the ratio of males (mean SVL 44.6 mm) to females (mean SVL 80.0 mm) of O. schmackeri is 1∶1.93, (2) vomerine teeth have two short series in O. nanjiangensis, compared to two long series in O. schmackeri; (3) dark spots present on green body back and have no light edge on O. nanjiangensis, while light-edged compared to dark spots with light edge on O. schmackeri; (4) rear of the thigh of O. nanjiangensis has large, scattered dark brown markings, compared to the rear of the thigh of O. schmackeri has small, densely marbled or spotted, dark brown markings; (5) webs of toes are rather small, web on fourth toe reaches distal sub-articulate tubercle of O. nanjiangensis, compared to the webs on the toes of O. schmackeri, which reaches the disc of the toe; (6) eggs of O. nanjiangensis are creamy white without pigment, whereas the eggs of O. schmackeri are pigmented and the animal pole is brown in color.