Specimens collected during the ANDEEP I and II expeditions revealed three new species belonging to the family Anar- thruridae and family incertae sedis. One new species of Anarthruridae, Ithyomus antarcticus n. sp. is described. Also de- scribed are two new species belonging to genera currently not assigned to a family; one in the genus Parafilitanais (P. denticulus n. sp.) and one in Pseudoarthrura (P. tuberculata n. sp.). The genus Cristatotanais is removed from Anarthru- ridae, while P. setoserrata is removed from Pseudoarthrura and elevated to genus rank under the name Selvagentanais gen. nov.
