In the course of ongoing research on the pseudoscorpion fauna in the northeastern region of Brazil, we compiled nine pseudoscorpion species with three of them, Geogarypus amazonicus , Apolpium ecuadorense , and Pachyolpium furculiferum , recorded for the first time from the Caatinga biome. Ecological comments are included, and the presence of G. amazonicus is discussed. Additionally, an updated checklist of all pseudoscorpion species and a map of the distribution of species richness for all biomes of Brazil are presented.