安徽熔洞伪克钩虾属一新种记述(端足目:钩虾科)

Discription of a New Species of Pseudocrangonyx from AnHui Lava Tubes, China (Amphipoda: Gammaridae )

本文记述了采自安徽含山熔洞的伪克钩虾属一新种,含山伪克钩虾Pseudocrangonyx hanshansis sp, nov.,新种与近缘种亚洲伪克钩虾p, asiaticu。之不同在于。第一尾足内肢短于柄部,内缘具2枚长粗利,第三尾足外肢第1节较柄部长3倍,端节很小,约为第1节的1/6;尾节板左右两叶,每叶具2枚端刺,外侧稍长;第二触角柄部之末节长于次末节,约与鞭节等长,腹部侧板2之下缘具1利,偶2利,侧板3之下缘具2利。

This paper describes a new species of pseudocrangonyx. This new specis closely resembles pseudocrangonyx asiaticus Ueno 1934, but differ from the latter in the following features: ( 1 )peduncle of uropod 1 slightly longer than the inner ramus which has 3 stout spines on the inner margin; (2) The proximal segment of uropod 3 is three times as long as the peduncle, the second segment very small, is about 1/6 of the proximal segment. ( 3 ) The apex of telson deeply emarginate, forming two lobes, each apex of which is armed with 1 long spine on outer lateral and 1 small spine on the inner lateral; (4) Peduncular ultimate of antenna 2 slightiy longer than penultimate segment; (5)Abdominal side plate 2 with 1 spine and plate 3 with 2 spines, on the lower margin.