| abstract | The present study is based on ptyctimous oribatid mite materials (Acari, Oribatida) collected from China, Taiwan, Indonesia, Myanmar and Vietnam. A list of identified taxa, including 26 species from five families, is presented; of these, new records are: five species (Atropacarus (Hoplophorella) hamatus, Notophthiracarus lienhardi, Phthiracarus lentulus, P. paucus, P. persimplex) in the Chinese fauna, two species (Austrotritia lebronneci and Atropacarus (Hoplophorella) hamatus) in Java and Bali, six species (Austrotritia lebronneci, A. robusta, Mesotritia maerkeli, Notophthiracarus robertsi, Oribotritia lepteces, Phthiracarus pondoklowii) in Myanmar, one species (Notophthiracarus lienhardi) in Vietnam. P. persimplex is new in the Oriental Region. Two new species are described: Phthiracarus paramindanaoensis Niedbała spec. nov. (Phthiracaridae) (from Taiwan) differs from Phthiracarus mindanaoensis Niedbała, Corpuz-Raros & Gruezo, 2006 by the arrangement of genital and adanal setae and surface of prodorsum; Plonaphacarus myanmarus Niedbała spec. nov. (Steganacaridae) (from Myanmar) differs from Plonaphacarus foveolatus Liu, Wu & Chen, 2011 by the shape of adanal setae ad2, morphology of prodorsum and formula of genital setae. The supplementary description of Notophthiracarus robertsi (Sheals, 1965) (Steganacaridae) is given based on material from Myanmar. |