Achipterina (Oribatida, Ceratokalummidae) currently comprises four species, collectively distributed in the tropical and subtropical areas. We describe a new species—A. mangrovicasp. nov.—based on adults collected from litter of a mangrove forest in the Can Gio Biosphere Reserve, southern Vietnam. It is the first representative of the family discovered in the Vietnamese fauna. The new species is characterized in having a bidentate rostrum, setiform rostral and lamellar setae, long inner tooth of lamellar cusp, unilaterally fusiform bothridial seta, long interlamellar seta, dentate anterior part of pteromorph, oval and oblique notogastral porose area Aa. The morphology of the gnathosoma, ovipositor, and legs are presented for the first time for Achipterina. An identification key and summary of distribution and habitats of the known species of Achipterina are provided. http://www.zoobank.org/urn:lsid:zoobank.org:pub:906EA4DE-A0A3-475C-B273-F8327F44832F.

Two new species of the genus Dolicheremaeus (Oribatida, Otocepheidae)—D. gialaiensis n. sp. and D. kbangensis n. sp.—are described, based on adults collected from forest litter in the Kon Chu Rang Nature Reserve, central Vietnam. Dolicheremaeus gialaiensis n. sp. characterized by the unusual sculpturing (small, dense, conical tubercles) of the prodorsum, notogaster, and anogenital region. Dolicheremaeus kbangensis n. sp. differs from the related species D. baloghi and D. lineolatus by the notogastral sculpturing, the morphology of the bothridial seta, and the length of the notogastral setae. An identification key to species of Dolicheremaeus from Vietnam is provided.