[1] They are relatively large, sombrely coloured spiders, that live in burrows with some kind of trapdoor.

They range in colour from light brown to black, usually without any strongly distinctive body markings.

Halonoproctus is now considered to be a junior synonym of Cyclocosmia, but this does not alter the priority of the name Halonoproctinae.

[2] Stasimopus Heteromigas (Migidae) Idiops (Idiopidae) Myrmekiaphila (Euctenizidae) Cteniza Cyrtocarenum Cyclocosmia Bothriocyrtum Hebestatis Latouchia Conothele Ummidia As of May 2018[update], the World Spider Catalog accepted the following genera.

[2] Species in the family Halonoproctidae have been recorded from western and eastern North and Central America and the Caribbean, with one species, Ummidia asperula, found in Venezuela in South America; on either side of the Mediterranean in southern Europe and northwestern Africa; in eastern Asia; and in Australasia.