Rediagnosis of Urucuia Kloss, 1961 (Nematoda; Rhigonematina; Carnoyidae) with comments on morphology and host distribution of the Carnoyidae, parasites of diplopods
1984; NRC Research Press; Volume: 62; Issue: 8 Linguagem: Inglês
10.1139/z84-236
ISSN1480-3283
Autores Tópico(s)Helminth infection and control
ResumoIn this study, two superfamilies are recognized in the Rhigonematina sensu Inglis, 1983: the Rhigonematoidea (containing the Rhigonematidae and the Ichthyocephalidae) and the Ransomnematoidea (containing the Ransomnematidae, Hethidae, and Carnoyidae). The Carnoyidae are recognized by the fact that the oesophageal corpus of the female is divided into narrow anterior and broad posterior portions. The carnoyid, Urucuia incondita Kloss, 1961, sole species of Urucuia Kloss, 1961 is redescribed and the genus is redefined. Urucuia most resembles Brumptaemilius in the structure of the spicules and gubernaculum, shape of the caudal extremity and disposition of caudal papillae in the male. The genera are distinguished principally by the structure of the baccal capsule of the male: in Brumptaemilius it has a broad open lumen and three prominent lanceolate cuticular formations project from its base; in Urucuia the posterior two-thirds of the baccal capsule are thick-walled with a much restricted lumen and cuticular projections are absent. The close similarity between Urucuia, a South American genus, and Brumptaemilius, an African genus, may reflect the fact that these genera are unique among the Carnoyidae in that they occur essentially in the Spirostreptinae (Order Spirostreptida).
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