Abstract
Coccidian oocysts recovered from the feces of queen snakes, Regina septemvittata, from Arkansas, USA, were found to represent a previously unreported eimerian. Oocysts of Eimeria septemvittata n. sp. are spherical or subspherical, 14.6×14.0 (12–16×12–15) μm, with a thin, bi-layered wall; the shape-index (length/width) is 1.04 (1.00–1.17). The micropyle and oocyst residuum are absent but a large polar granule is present. The sporocysts are ovoidal, 11.3×5.6 (9.5–13.5×5–6) μm and possess a Stieda body; the shape-index is 2.02 (1.81–2.50). Each sporozoite contains a large, centrally located refractile body and a generally smaller, posterior refractile body.
Published Version
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