“…In summary and according to taxonomic keys and descriptions by different authors, [23][24][25][26] the morphological characteristics of the nematodes were consistent with Aspidodera raillieti (Travassos, 1913) (Nematoda: Aspidoderidae), a typical parasite of opossums in Brazil and other parts of the Americas. 6,7,18,20,24,[26][27][28][29][30][31][32][33][34][35][36][37][38] The of specimen acanthocephalus had a white, pleated, fusiform, spiral-shaped body with marked transverse wrinkles, and a proboscis broadly armed with six longitudinally arranged spiral rows, each with six shallowly rooted hooks, making a total of 36 hooks, and a well-developed muscular copulatory bursa, roughly orbicular, at the posterior end, all characteristics compatible with a male specimen of O. Microcephalus. 3,15…”