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Acta Parasitologica

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Volume 60, Issue 3


A new species of Isospora (Apicomplexa: Eimeriidae) from eastern coachwhip, Coluber flagellum flagellum (Reptilia: Ophidia) from Oklahoma

Chris T. McAllister / R. Scott Seville / Matthew B. Connior
Published Online: 2015-06-16 | DOI: https://doi.org/10.1515/ap-2015-0065


Between June 2013 and August 2014, four eastern coachwhips, Coluber flagellum flagellum were collected from Arkansas (n = 2) and Oklahoma (n = 2) and their faeces examined for coccidian parasites. One (25%) harboured an isosporan that we describe here as new. Oocysts of Isospora kiamichiensis sp. n. were spheroidal to subspheroidal with a uni-layered wall and measured (length × width, L × W) 25.0 × 22.2 μm, with an L/W ratio of 1.1. A micropyle, oocyst residuum and polar granule were absent. Sporocysts were ovoidal, 13.9 × 9.4 μm, with an L/W ratio of 1.5. A pronounced, button-like Stieda body was present as well as a substieda body. A sporocyst residuum was present as dispersed granules. This is the first isosporan and fourth coccidian reported from eastern coachwhip snakes. In addition, a single oocyst of an unknown choleoeimerian was recovered from this host.

Keywords : Apicomplexa; Coccidia; taxonomy; oocysts; Reptilia; Ophidia; Isospora kiamichiensis; Oklahoma; Coluber flagellum flagellum


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About the article

Received: 2014-08-25

Revised: 2015-02-18

Accepted: 2015-02-18

Published Online: 2015-06-16

Published in Print: 2015-09-01

Citation Information: Acta Parasitologica, Volume 60, Issue 3, Pages 466–470, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: https://doi.org/10.1515/ap-2015-0065.

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