Echinostoma atrae, new species (Digenea : Echinostomatidae) in black coot Fulica atra (Aves : Rallidae) of Manchhar Lake, Sindh, Pakistan

摘要

Echinostoma atrae, new species (Digenea: Echinostomatidae) is described from intestine of the bird Black Coot Fulica atra of Manchhar Lake, Sindh, Pakistan. Although the present specimens resemble with type species Echinostoma revolutum but are distinguished from it in having aspinose body, 38 collar spines, absence of collar spines on oral sucker, more elongated and widely separated testes and tubular excretory bladder.