Caridina mongziensis Liang, Yan and Wang, 1987

Ng, Y. Cai and P. K. L. & Ng, Cai P. K. L., 2010, revision of Caridina yunnanensis and its allied species (Crustacea: Decapoda: Caridea: Atyidae) from Yunnan, southern China, with description of one new species, Journal of Natural History 35, pp. 213-227 : 221-222

Caridina mongziensis Liang, Yan and Wang, 1987

Caridina mongziensis Liang, Yan and Wang, 1987: 133 , ®gures 1±9 (type locality: Mengzi County, Yunnan).

Material examined

HOLOTYPE: m, cl. 6.8 mm (SFU-77-40-1), Mengzi County, Yunnan, 1977 . PARATYPE: One, l cl. 6.6 mm (SFU-77-40-2), data same as holotype.

Diagnosis

Rostrum short, reaching to middle of second segment or end of antennular peduncle. Rostral formula: 5±7 (mode 6) 1 4±6/1±4 (mode 3), anterior half of dorsal margin unarmed. Antennular peduncle 0.5 times as long as carapace. Carpus of ®rst pereiopod 1.8±2.3 times as long as high, chela 2.2±2.4 times as long as broad. Carpus of second pereiopod 4.4±4.9 times as long as high, chela 2.7 ±3.0 times as long as broad. Propodus of third pereiopod 3.2±3.4 times as long as dactylus, dactylus with six spinules. Propodus of ®fth pereiopod 4.0±4.1 times as long as dactylus, dactylus with 35±40 spinules. Endopod of male ®rst pleopod rectangular, 3.0 times as long as wide, appendix interna reaching slightly beyond distal end of endopod. Appendix masculina with two rows of strong spines; appendix interna short, about 0.25 times as long as appendix masculina. Uropodal diaeresis with 13±18 teeth. Egg size 1.35± 1.59 Ö 0.93±1.07 mm in diameter.

Habitat Unknown.

Distribution Mengzi County, Yunnan (®gure 1).

Remarks

Considering the form of the rostrum and the structure of the sexual appendages, Caridina mongziensis closely resembles C. yunnanensi s and C. disparidentata . Caridina mongziensis can be distinguished from C. yunanensis by the longer dactylus of the third pereiopod (propodus 3.2±3.4 times as long as dactylus vs 4.0±4.5 times in C. yunnanensi s) and the shorter appendix masculina (one-quarter as long as appendix interna vs one-third in C. yunnanensi s). Caridina mongziensis can be distinguished from C. disparidentata by the carpus of the second pereiopod being 4.4±4.9 times as long as high (vs 3.7±4.2 times in C. disparidentata ), the propodus of the third pereiopod being 3.2±3.4 times as long as the dactylus (vs 3.4±3.8 times in C. disparidentata ), the propodus of the ®fth pereiopod being 4.0±4.1 times as long as the dactylus (vs 3.5±3.9 times in C. disparidentata ), and the endopod of the male ®rst pleopod being 3.0 times as long as wide (vs 3.5 times in C. disparidentata ).

The epiphet mongziensis was incorrectly adopted by the original description after the type localityÐMengzi County ( Liang, Yan and Wang, 1987). Since the name, Caridina mongziensis , has been used more than once in the original description, we thus, follow the code ( ICZN, 1985) to retain the name.