NEMATODOS DE LAS AVES DE MEXICO. VIII.-DESCRIPCION DE UNA NUEVA ESPECIE DE FILARIA PERTENECIENTE AL GENERO DIPLOTRIAENA

Resumen

A member of the sub-family Diplotriaeninae is for the first time mentioned in Mexico as a parasite of wild birds. After comparing our species Diplotriaena rovegliae n. sp. with the descriptions and drawings of 33 of the 35 known species of this genus, we find that it presents some characters common to D. tridens (Molin, 1858) and to D. diucae Boulenger, 1928, having discorded D. pyromelanae because we consider it, with Boulenger, as a synonym to D. diucae. Even it D. rovegliai n. sp. presents some characters of the two species mentioned, it differs from them in the existence in its spicules of a spiral filament which runs all through the ir length; in the size of the tridens; the distance of the vulva to the anterior extremity; the presence of a cuticle
finely striated transversally; in that the oesophagus is not divided in its two portions and in the presence of two lateral alae in the spicules.