See text Brettus is a genus of jumping spiders.

Its six described species are found in southern Asia from India to China and Sulawesi, with a single species endemic to Madagascar.

Brettos (Βρεττος) was a son of Heracles[2] (appears at Stephanus of Byzantium).

Taking advantage of their ability to not adhere to any kind of spider silk, they practise aggressive mimicry and pluck upon the webs of web-building spiders to lure them over to the Brettus at the edge of the web, where they capture/stab their victim.

They are in these regards similar to the other Spartaeinae jumping spiders of genera Portia, Cyrba and Gelotia.