广西壮族自治区洞穴盲虾一新种--都安盲沼虾

摘要

记述广西洞穴盲虾一新种,即都安盲沼虾Macrobrachium douanensissp,nov.新种个体大小、形态与广泛分布的日本沼虾Macrobrachium nippomense相似.但新种眼退化变盲无色素,无眼柄,第2步足2指节光滑,掌节短而膨大,第1触角触须特别发达,长度超过体长的3倍等特征可明显区别.%A new species of troglobitic shrimp from Du'an Guangxi,Macrobrachium duanensissp.nov.is described.The size and morphological characters of the new species are similar with the widespread Macrobrachium nipponense,but the new species can be distinguished from Macrobrachium nipponense with the following features:degenerated eyes to blindness with no pigment,no eye stalk,dactylus of the 2nd foot and active dactylus without hairy structure,short but swollen propodite of the 2nd foot,and the 1st tentacle more than 3 times longer than the body.