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Crocodylocapillaria longiovata n. gen., b. sp. (Nematoda: Capillariidae) from the Stomach of Crocodiles in Australia and New Guinea

František Moravec and David M. Spratt
The Journal of Parasitology
Vol. 84, No. 2 (Apr., 1998), pp. 426-430
DOI: 10.2307/3284505
Stable URL: http://www.jstor.org/stable/3284505
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Crocodylocapillaria longiovata n. gen., b. sp. (Nematoda: Capillariidae) from the Stomach of Crocodiles in Australia and New Guinea
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Abstract

A new nematode, Crocodylocapillaria longiovata n. gen. and n. sp., is described from the stomach of wild and farmed young crocodiles, Crocodylus johnstoni Krefft, and Crocodylus porosus Schneider, from northern Australia and Papua New Guinea; it is undoubtedly identical with the nematodes previously reported as Capillaria sp. from Crocodylus novaequineae Schmidt from Irian Jaya, Indonesia. This capillariid species represents a new genus, being characterized mainly by the presence of elongate eggs with unusually long protruding polar plugs, a well developed vulvar appendage, a weakly sclerotized spicule, proximal and distal parts of the spicular sheath with spines, and the male posterior end with 2 large lateral caudal lobes and a pair of papillae near the cloacal opening. The body length of C. longiovata males and females is 5,576-7,208 µm and 8,609-14,008 µm, respectively, the spicule is 276-369 µm long; the size of the egg proper is 48-60 x 15-21 µm, length of polar plugs 15-18 µm. Neocapillaria Yi and Guitang, 1994, a junior homonym of Neocapillaria Moravec, 1987, is re-named Sinocapillaria nom. n. and placed as a synonym of Pseudocapillaria Freitas, 1959. Indocapillaria De and Maity, 1995 is retained as a subgenus of Pseudocapillaria because of the possession of a vulvar appendage in the type species. Neocapillaria Moravec, 1987 remains a subgenus of Capillaria Zeder, 1800. A key to genera of the Capillariidae from poikilotherm vertebrates is provided; C. longiovata is the first capillariid species described from the digestive tract of crocodiles.

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