A Redescription of Polymorphus obtusus Van Cleave, 1918 (Acanthocephala)
The Journal of Parasitology
Van Cleave (1918) first described briefly the acanthocephalan, Polymorphus obtusus, from the water-turkey, Anhinga anhinga, and later (1925) identified as P. obtusus a specimen from the great blue heron, Ardea herodias. No subsequent de- scription of this species has been found. Fourteen acanthocephala identified as P. obtusus have been recovered from the intestine of the ruddy duck, Erismatura jamaicensis. Since the writer has observed a number of morphological details not included in Van Cleave's papers, it seems desirable to extend the description of this species.
Ward, Helen L., "A Redescription of Polymorphus obtusus Van Cleave, 1918 (Acanthocephala)" (1943). Faculty Scholarship. 391.