MONOECOCESTUS JACOBI SP. N. (CESTODA: ANOPLOCEPHALIDAE) PARASITE OF CAPYBARA HYDROCHOERUS HYDROCHAERIS LINNAEUS, 1766 (RODENTIA: HYDROCHOERIDAE) FROM THE REGION OF "BANHADO DO TAIM", STATE OF RIO GRANDE DO SUL, BRAZIL¹

MONOECOCESTUS JACOBI SP. N. (CESTODA : ANOPLOCEPHALIDAE) PARASITO DE CAPIVARA HYDROCHOERUS HYDROCHAERIS LINNAEUS, 1766 (RODENTIA : HYDROCHOERIDAE) NA REGIÃO DO "BANHADO DO TAIM", ESTADO DO RIO GRANDE DO SUL, BRASIL

Manaecacestus jacabi sp. n. is described as a parasite of the small intestine of capybara (Hydrochaerus hydrochaeris) from the state of Rio Grande do Sul, Brazil. The new species most closely resembles M. hagmani, M. macrabursatum and M. minar. It differs from South American species of the genus in the size of strobila, opening of the genital atria, disposition of testes and size of proglottides.

KEY WORDS:
Manaecacestus jacabi sp; n.; Anoplocephalidae; Cestoda; Capybara; Hydrachaerus hydrochaeris, Rodentia.