A new species of Lohmanniidae, Meristacarus pubescentius sp. nov., is described from soil and leaf litter of Hainan Province, South China. It can be distinguished from all other Meristacarus species by the following characters: anterior exobothridial setae thorn-like, shorter than the interlamellar setae by one-tenth, transverse bands S2–S4, S9, and S10 complete while S5–S8 are interrupted medially. The new species is most similar to M. douhereti Balogh & Balogh, 1983 in having setiform notogastral setae and the median setae shorter than the marginal setae, but differ from M. douhereti by the very short, thorn-like anterior exobothridial seta, heavily ciliated sensillus and notogastral seta e1 half as long as e2. A supplementary description of Mixacarus (Phyllolohmannia) foliifer (Golosova, 1984), a new record to the Chinese fauna, is given from the same locality. Keys to species of Meristacarus and Mixacarus (Phyllolohmannia) are presented.