Description of four new species of the genus Neumania Lebert, 1879 (Acari, Hydrachnidia, Unionicolidae) from China

Four new species of the water mite genus Neumania Lebert are described from the Hanma National Nature Reserve, Genhe City, the Inner Mongolia Autonomous Region, China. Neumania (Neumania) vitrea Ding & Jin n. sp., based on male and female adults and distinguished by its transparent body; Neumania (Neumania) multiseta Ding & Jin n. sp., based on male and female adults and differentiated from related species by the numerous swimming setae on IV-Leg-4-5 of male; Neumania (Neumania) villosa Ding & Jin n. sp., based on adults of both sexes and deutonymphs, initially found both in miming and standing waters and distinguished by a well sclerotized body and integument covered with dense fine spines; Neumania (Neumania) tumeroglandula Ding & Jin n. sp., also based on adults of both sexes and deutonymphs, and distinguished by its giant glands of the fourth pair of lateroglandularia.