Paracamallanus amazonensis sp. n. (Nematoda: Camallanidae) um parasita de 
bagre, Hypophthalmus edentatus (Pisces: Hypophthalmidae) da Amazônia Brasileira

Ferraz, Evaldete; Thatcher, Vernon E.

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Paracamallanus amazonensis sp. n. (Nematoda: Camallanidae) um parasita de bagre, Hypophthalmus edentatus (Pisces: Hypophthalmidae) da Amazônia Brasileira

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Citation

Ferraz, E., & Thatcher, V. E. (1992). Paracamallanus amazonensis sp. n. (Nematoda: Camallanidae) um parasita de bagre, Hypophthalmus edentatus (Pisces: Hypophthalmidae) da Amazônia Brasileira. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas, 12(1), 1-6.

Cite as: https://hdl.handle.net/21.11116/0000-0004-8721-E

Abstract

Paracamallanus amazonensis sp. n. (Nematoda: Camallanidae) is described from the intestine of a fish
called "mapará", Hypophthalmus edentatus (Pisces: Hypophthalmidae) from Marchantaria Island, Solimões
River, Amazonas State, Brazil. Of the six species described in the genus, P. amazonensis sp. n. resembles only
P. cyathopharynx (BAYUS, 1923) because both have a buccal cavity divided into two parts posterior to the
valves. The new species differs from P. cyathopharyrnx in having: 1) a buccal cavity without teeth; 2) 6 pairs
of precloacal papillae and a single spicule in the male; 3) a vulva with the posterior lip in the form of a fold
which projects anteriorly; 4) a pointed tail in the female. This is the first report of a genus of Paracamallanus
YORKE & MAPLESTONE, 1926, in South America.