Dipetalonema sprenti n.sp. from Castor canadensis Kuhl

Abstract

Dipetalonema sprenti n.sp. is described from specimens removed from the peritoneal cavity of beavers (Castor canadensis) from Ontario, Canada. D. sprenti is found to be similar to D. arbuta Highby, 1943, but differs in the larger size of the eggs and fully developed embryos, the greater lengths of the spicules, the arrangement of the medial post-anal papillae, the more posterior position of the nerve ring, the greater length of the tail and in the considerably larger size of the body. D. sprenti is the fourth species of Dipetalonema described from rodents.