[2] All known species are fossorial and females lay eggs in a hammock egg-sack which yield about 95 spiderlings.

Separated from Harpactira and Trichognatha by the absence of a dense scopula on the upper prolateral cheliceral surface.

Male Augacephalus are separated from those of Eucratoscelus and Pterinochilus by lacking the distal proventral tibial apophysis or by the reduced surmounted megaspine.

The presence of a distal prodorsal spine on metatarsi III and IV further separates Augacephalus from Eucratoscelus.

Female Augacephalus are separated from those of Pterinochilus by the absence of long emergent setae on the chelicerae (giving them a velvety appearance), their robust palpi and legs I–II, and by the position of their posterior sternal sigilla (an impressed sclerotized spot).