title: A new species of Eimeria (Apicomplexa: Eimeriidae) from the western hognose snake, Heterodon nasicus (Serpentes: Xenodontidae), from Texas.
abstract: A new species of coccidian (Apicomplexa: Eimeriidae) is described from the feces of a western hognose snake Heterodon nasicus (Serpentes: Xenodontidae) collected from Texas, and housed in the collection of the Zoological Society of London. Oocysts of Eimeria mchenryi n. sp. are cylindrical, 35.0 ± SD 1.4 (32-37) × 17.0 ± 0.7 (16-18) µm; the shape index (length/width) is 2.05. A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are subspherical 9.3 (7-11.5) × 7.7 (6-9) µm, with a shape index of 1.2. There is a sporocyst residuum, but the new species is lacking Stieda bodies. The new species is distinct from those previously named from the Xenodontidae and the allied family, Colubridae.
authors.affiliation: EcoHealth Alliance, 460 West 34th Street, New York, New York 10001, USA. daszak@ecohealthalliance.org
authors.forename: Peter
authors.initials: P
authors.lastname: Daszak
authors.forename: Stanley J
authors.initials: SJ
authors.lastname: Ball
authors.forename: Daniel G
authors.initials: DG
authors.lastname: Streicker
authors.forename: Keith R
authors.initials: KR
authors.lastname: Snow
mesh_terms: D000818:Animals; D003048:Coccidiosis / Q000469:parasitology / Q000662:veterinary*; D017812:Colubridae / Q000469:parasitology*; D004539:Eimeria / Q000145:classification* / Q000302:isolation & purification / Q000648:ultrastructure; D013781:Texas