Synhimanthus (Synhimanthus)laticeps (Rudolphi, 1819)Railliet, Henry et Sisoff, 1912 (Nematoda, Acuariidae)parasitic in Tyto alba (Aves, Tytonidae)in Argentina

JORGE ALEJANDRO ETCHEGOIN; CREMONTE, FLORENCIA; NAVONE, GRACIELA TERESA

Acta Parasitologica

Año: 2000 vol. 45 p. 99 - 106

During the parasitological examination of the barn owl Tyto alba (Gmelin), from Mar Chiquita coastal lagoon in Argentina, specimens belonging to Synhimantus (S.) laticeps (Rudolphi, 1819) Railliet, Henry et Sissof, 1912 were obtained. Comparison of measurements of present specimens with Cram and Smogorzhevskaya's description of the same species, revealed several dissimilarities in the metrical features which cannot be considered great enough to create a new species. This new record of S. (S.) laticeps represents the first citation of this nematode from South America, and contributes to the knowledge of the morphology of this species, giving complete measurements and a detailed description of spicules. In addition, morphological and evolutionary considerations regarding fourth larval stages and subadults of S. (S.) laticeps, are also presented in this paper.