Fecal samples collected in April 2019 from 10 half-lidded ovals, Patera binneyana (Pilsbry, 1899) (Gastropoda), in McCurtain County, Oklahoma, U.S.A., were examined for coccidial parasites. Seven (70%) contained oocysts of Pfeifferinella gugleriWacha, 1980. Ovoidal octozoic oocysts without sporocysts measured (average L × W) 22.2 × 14.1 µm with an L:W ratio of 1.5. Oocysts possessed a subspheroidal to spheroidal oocyst residuum as well as a micropyle. This snail represents the fourth host to harbor this coccidian. We document a new host and geographic distribution record for P. gugleri.
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25 January 2021
Pfeifferinella gugleri (Apicomplexa: Pfeifferinellidae) in Half-Lidded Ovals, Patera binneyana (Gastropoda: Stylommatophora: Polygyridae), from Oklahoma, U.S.A.
Chris T. McAllister,
John A. Hnida
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Comparative Parasitology
Vol. 88 • No. 1
January 2021
Vol. 88 • No. 1
January 2021
Apicomplexa
Gastropoda
half-lidded oval
Oklahoma
Patera binneyana
Pfeifferinella gugleri
Polygyridae