title: A new oligacanthorhynchid acanthocephalan described from the great horned owl, Bubo virginianus (Strigidae), and red-tailed hawk, Buteo jamaicensis (Accipitridae), from central Arizona, U.S.A.
abstract: Oligacanthorhynchus nickoli n. sp. (Acanthocephala: Oligacanthorhynchidae) is described from the great-horned owl, Bubo virginianus (Gmelin, 1788) (type host), and red-tailed hawk, Buteojamaicensis (Gmelin, 1788), collected in central Arizona. The new species is most similar to Oligacanthorhynchus iheringi and Oligacanthorhynchus minor, but it differs from all congeners primarily by trunk length, proboscis size and armature, egg size, geographical range, and host species. It is distinguished from the 9 Oligacanthorhynchus species occurring in avian hosts from both the Western and Eastern Hemispheres. Descriptions of juvenile forms of O. nickoli from the intestine of B. jamaicensis are provided from recently ingested cystacanths with everted proboscides.
authors: University of Pittsburgh, Laboratory Animal Resources, S1040 Biomedical Science Tower, 200 Lothrop Street, Pittsburgh, Pennsylvania 15261, USA. boletted@dlar.pitt.edu
authors: David P
authors: DP
authors: Bolette
mesh_terms: D000049:Acanthocephala / Q000033:anatomy & histology / Q000145:classification*; D000818:Animals; D001130:Arizona; D001715:Bird Diseases / Q000469:parasitology*; D005260:Female; D046428:Hawks / Q000469:parasitology*; D006374:Helminthiasis, Animal / Q000469:parasitology*; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary; D007421:Intestine, Small / Q000469:parasitology; D008297:Male; D020305:Strigiformes / Q000469:parasitology*