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A new species of Caryospora Léger, 1904 (Apicomplexa: Eimeriidae) from the snake Philodryas olfersii Lichtenstein (Colubridae) from a coastal habitat in Brazil


A new coccidian species of the genus Caryospora Léger, 1904 (Protozoa, Apicomplexa, Eimeriidae) is reported from the colubrid snake host Philodryas olfersii Lichtenstein at a coastal area in the State of Rio de Janeiro, south-eastern Brazil. Oöcysts of Caryospora olfersii n. sp. are spherical to sub-spherical, 33.1 × 31.2 μm, with smooth, colourless, three-layered wall, c.1.4; middle layer lightly striated. Micropyle, oöcyst residuum and polar granule are all absent. Sporocysts are ovoid, 22.9 × 17.4 μm on average, with one extremity in the shape of a short neck. Stieda body present, 3.2 × 1.3 μm, sub-Stieda body present, homogeneous, larger than Stieda body, 4.5 × 1.7 μm. Sporozoites are inserted in a bulky sporocyst residuum.

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This study was supported by grants from the Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) to LAV (E-26/102.498/2010), to GRW (E-26/100.769/2008 and E-26/100.477/2011), and to CFDR (Programa Cientistas do Nosso Estado; E-26/102.404/2009). We also thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support to CFDR (304791/2010-5 and 470265/2010-8). We thank Carlos Wilson Lopes for reviewing the first draft of the manuscript and encouragement. We appreciate the efforts of Marlon Santos and Felipe Bottona during the field work.

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Correspondence to Lúcio A. Viana.

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Viana, L.A., Winck, G.R., Coelho, C.D. et al. A new species of Caryospora Léger, 1904 (Apicomplexa: Eimeriidae) from the snake Philodryas olfersii Lichtenstein (Colubridae) from a coastal habitat in Brazil. Syst Parasitol 85, 195–199 (2013).

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  • Coastal Habitat
  • Atlantic Rainforest
  • Coastal Sand Dune
  • Polar Granule
  • Stieda Body