It is the first fully revised endemic Brazilian genus of spiders, uncovered in 2012 after two and a half years of research at São Paulo's Instituto Butantan.

The generic name is in honor of the Predator from the eponymous 1987 film, as the researchers found the spiders' chelicerae similar to the creature's unmasked face.

[1] Members of the genus (all of which are endemic to Brazil) were discovered by a team of Brazilian scientists as part of the Planetary Biodiversity Inventory (PBI) project on the goblin spider family (Oonopidae).

It was led by the arachnologist Antonio Domingos Brescovit of Instituto Butantan, who has been studying spiders in the Brazilian Atlantic Forest since 2006.

[4] They are distinguished by the projected and articulated chelicerae of the males, the conspicuous posterior receptacle of the genitalia of the females, and the spines with pronounced bases on the legs of both sexes.