Three new species of the Amphinemurinae genus Amphinemura, A. dicroidea sp. nov., A. longihamita sp. nov. and A. microhamita sp. nov., are described from China. These new species are compared with related taxa. Amphinemura multispina (Wu) and Sphaeronemoura grandicauda (Wu) (also belonging to the Amphinemurinae) are recorded from Shaanxi Province, northwestern China for the first time. The adult male of A. multispina is redescribed and the adult female of S. grandicauda is also described based on new material.
Two new species of the genus Amphinemura, A.albicaudasp. n. and A.dingoideasp. n. from the southern Qinling Mountains, Foping County of Shaanxi Province, western China, are described based on both sexes and the larval stage. The new species are compared with related taxa, and the A.sinensis species group is defined for an Oriental lineage of the genus. Amphinemurasinensis (Wu, 1926) and A.unihamata (Wu, 1973) are reported from Shaanxi for the first time, and the hitherto unknown female of A.unihamata is described. A distribution map of the Amphinemurinae known from Qinling Mountains is given.
A new chloroperlid stonefly species, Sweltsa brevihamula sp. nov. from Sichuan Province of southwestern China is described and illustrated. We also provide a provisional key to the known Sweltsa males of China.
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