摘要
本文描述采自福建永安的马来溪蟹属 Malayopotamon Bott,1968一新种——永安马来溪蟹M.vonganense sp.nov 孳生于海拔600—700m的小山溪中。蟹体肺吸虫囊蚴感染率为81.8％。
This paper reports a new species of freshwater crab of the genus Malayopotamon Bott,1968. All type specimens are deposited in the Institute of Parasitic Diseases of FujianProvince, Fuzhou. Malayopotamon yonganense sp. nov. (figs. 1--9) Holotype , Carapace length 32. 1mm, breadth 37. 3mm; allotype: , length 21. 0mm,breadth 24. 9mm; paratypes: 2 1 , collected from Kezhouken of Yongan City (25°42′N,117°30′E), Fujian, September 1989, 600--700m etres above sea level, breadth of the stream isabout 0. 31 -- 1metre. Carapace slightly convex, post-frontal lobes protruded, post-orbital crests distinct, pos-terier part of cervical groove deeper. Anterolateral border with elongate rounded teeth. Firstpleopod of male slender and flattish, its distal end exceeding the suture between 4--5th ster-num, penutimate segment 1. 4 times as long as the last segment, distal-segment and curveddorso-inner distinctly. The penutimate segment of the second pleopod of male about 1. 3 timesas long as the last segment. the sixth abdominal segment of male about 2. 2 times as broad aslong, telson tongue-shaped 1. 2 times as broad as long. Abdomen of femal elliptic, telson isabout 1. 9 times as broad as long, its length about equal to sixth segment long. M. magnum were found naturally infected with the metacercariea of Paragonims wester-mani and Euparagonimus cenocopiosus. The infective rate of crabs were 81. 8% (18/22) withan average number of 20. 9 metacercariae. This new species closely resembles M. fukienense, but the differences between them maybe shown in the following table:
出处
《动物分类学报》
CSCD
1993年第4期412-416,共5页
Acta Zootaxonomica Sinica
关键词
十足目
石蟹科
马来溪蟹属
新种
Decapoda
Isolapotamidae
Malayopotamon
new species
