Morphology and phylogeny of Thelohanellus marginatus n. sp. (Myxozoa: Myxosporea), a parasite infecting the gills of the fish Hypophthalmus marginatus (Teleostei: Pimelodidae) in the Amazon River.

Morphology and phylogeny of Thelohanellus marginatus n. sp. (Myxozoa: Myxosporea), a parasite infecting the gills of the fish Hypophthalmus marginatus (Teleostei: Pimelodidae) in the Amazon River.