摘要
本文描述了云南省条鳅亚科鱼类一新属和一新种。根据形态特征并结合区系间的相互关系,探讨了属的分类地位。
Protonemacheilus, gen. nov.
Type-species, Prolonemachcilus longipectoralis, sp. nov.
Body slightly elongate and compressed. Anterior and posterior nostrils closely adjacent, anterior one in a short tube. Mouth inferior, upper and lower lips neither fimbriated nor papillated. Barbels 6, long, 4 rostral and 2 maxillary. Body covered with minute scales except the head and thoracic region. Lateral line uncomplete, terminating over the anal fin. Pectoral girdle with a postclei-thrum. The posterior wall of bony capsule membranous. The posterior chamber of air-bladder developed and connected to anterior chamber with a short tube.
The new genus resembles Micronemacheilus Rendahl and Paranemachilus Zhu in having a postcleithrum in pectoral girdle, the posterior wall of bony. capsule membranous and the anterior nostril in a short tube. However it can be distinguished from Micronemacheilus in the unfimbriated lips, having less dorsal fin rays. It differs from Paranemachilus in having no scales on checks, short barbels (Table 2). Protonemacheilus longipectoralis, sp. nov.(Fig.l)
Diagnosis. Postcleithrum present} the posterior wall of bony capsule mem-branous; posterior chamber of air-bladder developed; anterior and posterior nostrils closely adjacent and the anterior one in a short tube; upper and lower lips neither fimbriated nor papillalcd; lateral line uneomplete. By these diagnostic characteristics this new species can be distinguished from other known species of the subfamily (Table 1 ).
Holotype no. 8310110, standard length 53.0 ram, collected from Luxi county (24°30'N 98°37'E), Yunnan in Oct. 1983. Paratype nos. 8310106, 8310108, 8310109, 8310111, standard length 52.9-62.3 mm, locality and date same as holotype. Type specimens are deposited in Kunming Institute of Zoology, Academia Sinica.
基金
国家自然科学基金资助项目
关键词
条鳅亚科
新属
新种
分类单位
Ncmacheilinac, New genus, New species
Taxonomic status
