New records of water mites of the family Sperchontidae Thor, 1900 from China (Acari, Hydrachnidia), with descriptions of two new species.

Five species of water mites of the family Sperchontidae Thor, 1900 are reported from China. Two of them are new to science, Sperchon (Sperchon) orbipatellasp.n. and Sperchon (Sperchon) urumqiensissp. n., and the other three are new to China, i.e., Sperchon (Palpisperchon) nikkoensis Imamura, 1976, Sperchon (Sperchon) sounkyo Imamura, 1954 and Sperchonopsis (Sperchonopsella) whiteshellensis Conroy, 1991. The first descriptions of the female of Sperchon nikkoensis and the male of Sperchon sounkyo are also given. The subgenus Sperchonopsella Conroy is new to the fauna of China.