Idiosoma planites is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 1985 by Australian arachnologist Richard Faulder.
The species occurs in New South Wales in the Riverina, Darling Riverine Plains, Cobar Peneplain and New England Tablelands bioregions. The type locality is Girilambone.