Supported by NSF-PEET DEB 9521687
The genus Pfeifferinella Waiselewski, 1904 is characterized by oocysts with no sporocysts, and each sporocyst with 8-more free sporozoites and a large oocyst residuum. A distinct convex micropyle is generally present at one end of the oocyst. Typically, the majority of species have developmental stages (merogony, gamogony, sporogony) within the digestive gland of gastropods, and oocysts are passed in the feces. In some species, the micropyle becomes temporarily extended during formation (Leger & Hollande, 1912), which has led some authors to use the "vaginal tube" as a way of segregating these species into a separate family (Grasse, 1953; Levine, 1973). A morphologically similar coccidian from priapulids, without known developmental extensions of the micropyle, was given the generic designation Alveocystis Bel'tenev, 1980. Levine (1985) separated the genus Pfeifferinella from Alveocystis based on the presence or absence of the vaginal tube, which is rejected here.
Pfeifferinella ellipsoides Waiselewski, 1904
Pfeifferinella gugleri Wacha, 1980
Pfeifferinella impudica Leger & Hollande, 1912
Pfeifferinella macrocoronata (Luling, 1943) Levine, 1977
Pfeifferinella sp. of Fritsche, 1987
Pfeifferinella sp. of Fritsche, 1987
Pfeifferinella sp. of Fritsche, 1987
Pfeifferinella sp. of Fritsche, 1987
Pfeifferinella sp. of Fritsche, 1987
Apel, W. 1885. Beitrag zur Anatomie und Histologie des Priapulus caudatus (Lam.) und des Halicryptus spinulosus (v. Sieb.). Zeitschrift fur Wissenschaftliche Zoologie 42: 459-529.
Bel'tenov, A.E. 1980. Alveocystis intestinalis n. sp., n. gen. - a new species of coccidian from the intestine of Priapulida. Voprosy Parasitl Voddnyk Bespozvon. Zhivotnykh (Temat. Sbornik), Vilnyus, USSR 1980:10-11.
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