title: A New Host forCaryospora lampropeltis(Apicomplexa: Eimeriidae) from the Eastern Hognose Snake,Heterodon platirhinos(Ophidia: Colubroidea: Dipsadinae), from Arkansas, U.S.A., with a Summary of Hosts of This Coccidian.
abstract: Between May 2012 and July 2013, four eastern hognose snakes (Heterodon platirhinos) were collected from Arkansas (n= 2) and Oklahoma (n= 2), U.S.A., and examined for coccidians. A singleH. platirhinosfrom Arkansas was found to be passing oocysts ofCaryospora lampropeltisAnderson, Duszynski, and Marquardt. Oocysts ofC. lampropeltiswere spheroidal to slightly subspheroidal with a rough, colourless, bi-layered wall, measure 23.5 × 22.8 µm, and have a length/width (L/W) ratio of 1.0; both micropyle and oocyst residuum were absent, but a prominent polar granule was present. Sporocysts are ovoidal, 16.8 × 12.8 µm, L/W 1.3; a prominent Stieda and subStieda body was present; a sporocyst residuum was present and composed of numerous spheroidal granules dispersed into small and large granules. Sporozoites lie lengthwise and parallel in a semi-spiral in sporocyst; a spheroidal anterior refractile and posterior refractile body is present; a single nucleus is located between the 2 refractile bodies. This represents the first report of a caryosporan reported fromH. platirhinosas well as the only known coccidian from this host. A summary of hosts ofC. lampropeltisis provided.
authors.affiliation: Science and Mathematics Division, Eastern Oklahoma State College, Idabel, Oklahoma 74745, U.S.A. ( cmcallister@se.edu ).
authors.forename: Chris T
authors.initials: CT
authors.lastname: McAllister
authors.affiliation: Department of Zoology and Physiology, University of Wyoming/Casper Center, Casper, Wyoming 82601, U.S.A. ( sseville@uwyo.edu ).
authors.forename: R Scott
authors.initials: RS
authors.lastname: Seville
authors.affiliation: Health and Natural Sciences, South Arkansas Community College, 300 S. West Ave., El Dorado, Arkansas 71730, U.S.A. ( mconnior@southark.edu ).
authors.forename: Matthew B
authors.initials: MB
authors.lastname: Connior
keywords: Apicomplexa; Arkansas; Caryospora lampropeltis; Heterodon platirhinos; Ophidia; coccidian; eastern hognose snake