Two new species of Stigmaeidae, Agistemus rodriguezi Paktinat-Saeij & Cruz sp. nov. and Eryngiopus moraesi Paktinat-Saeij & Barroso sp. nov. are described and illustrated on the basis of adult specimens from northern Brazil.
Keywords: Acari, Prostigmata, Agistemus, Eryngiopus, predatory mites, systematics, Amazonas State, Alagoas State.