A New Species of Sinodina from Yunnan, China (Decapoda: Caridea: Atyidae)

In the present paper a new species of Sinodina is described. 1 Type material Holotype, ♂, China: Taoyuan, Yongsheng County, Yunnan Province (26°75′N, 100°70′E), 1?100m, 20-Ⅷ-1981, coll. CHEN Guo xiao. Paratypes, 10♂♂, 10♀♀, same as holotype. Holotype is deposited at Institute of Zoology, the Chinese Academy of Sciences, Beijing. 2 Description Sinodina yongshengica Chen et Liang, sp nov (Fig 1:a-k) Rostum reaching to the middle of 2nd segment or to the end of 3rd segment of antennular peduncle; dorsal border bearing 5-9 teeth, 1-2 of which situated on carapace behind orbit; tip bearing a footh; ventral border bearing 1-2 teeth. Telson without a shorter median tooth on the distal margin of the dorsal surface. Dactylus of lst pereiopod shorter than palm; carpus of 2nd pereiopod longer than merus; 3rd pereiopod sexually dimorphic, dactylus armed 16-19 spines in males and 13-16 spines in females; dactylus of 5th pereiopod armed 36-44 spines. Uropodal diaeresis with 11-15 spines. 3 Remarks The present new species is closely allied Sinodina lijiang Liang et Cai, 1999, but differs from the latter in following features: telson without a median tooth; ultimate of 3rd maxilliped covering with many spines on the distal portion; dactylus of 1st pereopod shorter than palm; carpus of 2nd pereopod longer than merus; spines of 3rd-5th pereopods less in number; teeth of diaeresis more in number; eggs smaller in size.