Contributions to the knowledge of Hygrobatidae (Acari: Hydrachnidia) from Hainan, P.R. China

This study describes three new species and reports one new record from Hainan Province, P.R. China. The new species are Hygrobates (Hygrobates) lenta Liu & Guo sp. nov., Hygrobates (Hygrobates) notosquama Liu & Guo sp. nov., and Vietnobates neooryzae Liu & Guo sp. nov. The discovery of V. neooryzae also constitutes the first record of the genus Vietnobates in China. Additionally, a new record of Hygrobates (Hygrobates) cf. hamatus K. Viets, 1935, is provided. Detailed taxonomic characters were documented using scanning electron microscopy (SEM).