Four new species of the genus Amphinemura (Plecoptera: Nemouridae) were described from Sichuan, China with morphological descriptions and illustrations, i.e., A. gyracantha Ji & Du sp. nov., A. digitata Ji & Du sp. nov., A. spinellosa Du & Ji sp. nov., and A. qingchengshana Ji & Du sp. nov. A. gyracantha is similar to Amphinemura dispositspina Du & Wang, 2007 in the epiproct, but the morphology of the lateral arm of the epiproct and the median paraproct lobe of the new species is diagnostic. A. digitata is related to A. sclerotica Du and Zhou, 2007 in having a similar paraproct in the ventral view, but the epiproct of two new species is distinct. A. spinellosa is similar to A. lii Zhu and Yang, 2003 in the paraproct, but A. denticulat can be easily separated by inner lobe slightly sclerotized and outer lobe separated from median lobe. A. qingchengshana is related to A. claassenia Wu, 1935 in having a similar epiproct, but they differ mostly in the details of paraproct.
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Vol. 97 • No. 2