theletrum lamothei sp. nov. (digenea), parasite of echidna nocturna from cuajiniquil, guanacaste, and other digenes of marine fishes from costa rica. | a new species of theletrum is described from the intestine of two palenose morays, echidna nocturna, collected in cuajiniquil, guanacaste province, costa rica. the new species differs from the type species, t. fustiforme linton, 1910 by having a subspherical pars prostatica, a subspherical seminal vesicle extending anteriorly to the anterior border of the acetabulum, by the presence of a poorly developed hermaphroditic sac, and by having a larger body size. we also report eight additional specie ... | 1998 | 10347817 |