【摘要】 <正> 本文记述的米虾属一新种,标本采自于云南省蒙自县,兹描述如下: 蒙自米虾,新种Caridina mongziensis sp. nov.(图1—9) 额角短,通常伸至靠近第一触角柄第2节的末端或稍微超出,上缘具9—11齿,有5—7(通常为6)齿位于眼眶后缘的头胸甲上,额角末端的1/2—2/3无齿;下缘具1—4(通常更多还原

【Abstract】 The present paper describes a new species of Caridina. The specimens were collected from Mongzi, Yunnan Province in 1977. The diapostic features of this new species are given as fol-lows:Craidina mongziensis ey, nov. (figs. 1-9)Rostrum eatends to the -extremity of the second segment of the antennular peduucle.. The proximal half of its upper margin is provided with 9-11 teeth, 5-7 of which are placed on the carapace behind orbital margin. The distal 1/2-2/3 of the upper margin is devoid of teeth.Carpus of the first leg is about 2.3 times is long as wide. Carpus of the second leg is about 4.4 times as long as wide. Propodus of the third leg is about 3.2 times as long as dactylus which bears 6 spinules. Propodus of the fifth leg is about 4 times as long as dactylus which bears 41 spinules. .The endopod of the first male pleopod is rectangular, and the middle of its. inner border is deeply concave. The proximal half of the outer border bears many long plumose setae, and the extreme half of it bears many strong spinules.Comparison: This new species dosely resembles Cari醝na dianchiensis Liang et Yan, but differ from the latter in the following features: (1) rostrum is shorter, the teeth of its dorsal and ventral borders and orbital margin are less in number, it is often situated on the proximal 1/2-1/3 of the dorsal margin; (2) carpus of 2nd leg is shorter, (3) the third maxilliped with its last joint shorter than the penultimate; (4) the third legs of the male are not longer than those of the female; (5) the spines of the appendix masculina of the inner margin are more; (6) the teeth of the outer uropod are more numerous; (7) the eggs are larger ,in size.Holotype ♀(77-40-1), paratype 4♂♂ 3♀♀, Mongzi (23°20’ N, 103°25’ E), Yunnan Province.更多还原