| abstract | This work reports 43 species of phytoseiids on native and exotic palm plants (Arecaceae) in areas of the States of São Paulo and Pernambuco, Brazil. The survey was done on 24 native and 14 exotic species of palm trees. Ten new species of phytoseiid mites are described: Amblyseius euterpe n. sp., Amblyseius geonomae n. sp., Amblyseius igarassuensis n. sp., Iphiseiodes setillus n. sp., Neoseiulus recifensis n. sp., Neoseiulus veigai n. sp., Paraamblyseius multicircularis n. sp., Typhlodromips ariri n. sp., Typhlodromips cananeiensis n. sp. and Typhlodromips jucara n. sp. The most frequent species in the wild belonged to Amblyseius and Typhlodromips, while the most frequent in altered areas belonged to the genera Amblyseius, Euseius and Iphiseiodes. |