ABSTRACT
Occurence of Matacutarabra ssp/body region/season was found on 10 Nectomys squamipes (N=193), 10 Oryzomys nigripes (N=69), 2 Didalphis marsupialis (N=34), 1 Caluromys philander (N=4) and 3 Oecomys trinitatis (N=56), small mammals species collected at Reserva Biológica de Poço das Antas (Rio de Janeiro). 41,2% of all cases took place in autumm, 29,4% in spring, 17,7% in summer and 11,8% in winter. 89% of the larval were found on the dorsal part of the hosts, 5,5% on the ventral region and 5,5% on the jugal region.