The small, basically Southeast Asian genus Plusioglyphiulus Silvestri, 1923 is redefined to incorporate, in addition to the five hitherto described species, nine new members: P. ampullifer n. sp. from Vietnam, P. deharvengi n. sp., P. foveatus n. sp. and P. steineri n. sp. from Laos, P. bessoni n. sp. from Thailand, P. bedosae n. sp., P. pallidior n. sp. and P. similis n. sp. from Kalimantan (Borneo, Indonesia), and P. hoffmani n. sp. from Sarawak (Borneo, Malaysia). All of the cavernicolous congeners are presumed to be only troglophiles. A key is provided to all 14 currently known species of the genus.
Diplopoda, Cambalopsidae, Plusioglyphiulus, subterranean biology, cave, Southeast Asia, new species.