携带并殖吸虫囊蚴的华溪蟹新亚种报告(十足目:短尾派)

本文报道了充当并殖吸虫第二中间宿主,分布于福建省霞浦、福安、寿宁、福鼎、拓荣县(市)的淡水华溪蟹,经鉴别,均非福建华溪蟹(Sinopotamon fukienense),而是浙江华溪蟹新亚种Sinopotamon chekiangensemindongense subsp,nov.,澄清了蟹种分类。

A NEW SUBSPECIES OF CRAB OF THE GENUS Sinopotamon HARBOURING METACERIAE OF Paragonimus (DECAPODA: BRACHYURA)

This paper reports a new subspecies of freshwater crab of the genus Sinopotamon, harbouring metaceriae of Paragonimus westermani, P. ringeri and Euparagonimus cenocopiosus. The distributions of this crab were found in Xiapu county, Fuan city, Shouning county, Fuding city and Zerong county. All type specimens are deposited in Fujian Research Institute of Parasitic Diseases, Fuzhou, P. R. C. Sinopotamon chekiangense mindongense Cheng et Li, subsp. nov. Holotype: 1 (?) , carapace length 30mm, breadth 39mm; collected from Zhangqiao village in Xiapu county (26?5'N, 119?6'E), Fujian; May, 1994 ; 200 - 300 metres above sea level; breadth of the stream about 1 ?3 metres; water temperature 15() C , pH6. 0. Paratypes: 13(?),5(?). Carapace slightly convex, post ?prontal lobes protruded. Epibranchial tooth with 6? teeth. Anterolateral margin with granlar 11?3 teeth. The tip of the 1st pleopod of male exceeding the suture between the 3rd and 4th sternum; penultimate segment 3. 5 times as long as the distal segment. The penulimate segment of the 2nd pleopod of male 2. 6 times as long as the distal segment. The breadth fo the 6th abdominal segment of male 2. 0 times as broad as long. Telson tongue shaped 1. 1 times as broad as long. Genital pore of female elongate round; the base breadth of distal segment 2. 3 times as broad as long,its length corresponding to that of the 6th abdominal segment. This new subspecies closely resembling 5. chekiangense, but differing in the male's 1st pleo-pod , with elongate round, of the distal segment. This pleopod more prominently toward dorsal reverse side.