New Species of the Genus Plonaphacarus (Acari: Oribatida) and the Current Knowledge on the Fauna of Ptyctimous Oribatids of Uganda

Twelve species of ptyctimous oribatid mites in total are reported from newly examined 34 samples collected from Uganda in Kibale National Park and its direct neighbourhood. In this number seven species are new to fauna of Uganda and one (Plonaphacarus quasibrevisetus Niedbała sp. nov.) new to science is described and illustrated. Another species Steganacarus (Steganacarus) carusoi Bernini et Avanzati, 1989 reported in subsaharan Africa for the first time is also illustrated and supplied with diagnosis based on Ugandan specimen. Summary of Uganda ptyctimous fauna indicates that superfamily Phthiracaroidea predominates numerically over Euphthiracaroidea (19 vs. 7 species).