The present report deals with host distribution ectoparasites related to a col-lection of 1, 774 specimens captured on 51 wild rodentes and 3 marsupials, during three different periods from November 1987 to 19&9, in Maracá Island, Roraima State, Brazil. The number of ectoparasites found, as well as the sex ratio of the ectopanasites are presented. New host records are given for. A. fahrenholzi, G. goyanenis, L. flexa, L. paulistanensis and T. aymara. All the ectoparasites are, recorded for the first time in Roraima State. With the exception of Amblyomma sp., Cummingsia sp. ,H. Aplendida, P. klagesi blagesi, P. blagesi samielis and Rhopalopsyllus australis ssp., the otherspecies are recorded for. the fist time in Brazilian's Amazon. L. flexa, T. amazonicus, T. apicalis, T. aymara and G. venezuelanus also constitute new Brazilian records. Two new species of ectoparasites were also found: one acari and one biting lice.