Abstract
A new species, Gammarus hoboksar Hou, sp. nov., is described from the Irtysh River basin of Xinjiang, China. The species differs morphologically from its congeners by calceoli of antenna II absent; merus and carpus of pereopods III–IV with short setae; inner ramus of uropod III about 0.79 times the length of outer ramus, terminal article of outer ramus about 0.24 times the length of first article; telson cleft, with spines and setae on surface and three spines on distal end. Phylogenetic analysis based on 28S rRNA and COI gene sequences supported the species distinctness. A key to the genus Gammarus with nine species and a map of their distributions are provided.
References
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