CONICET | Buscador de Institutos y Recursos Humanos

This critical revison of the Heligmonellidae (Nematoda: Trichostrongylina, Heligmosomoidea) provides a compilation of the taxonomical, morphological and morphometrical data currently available on the family Heligmonellidae.The data sources were mostly the original descriptions and redescriptions of taxa, nomenclatural proposals and taxonomical changes available from the literature. A minimal part of the content is based on unpublished information. The data concerning each species were entered into three main data bases: taxonomical, morphometrical and morphological, and managed by a database management software (File Maker Pro®).From these databases, a sheet was established for each species according to the following plan: taxonomical section, morphological then morphometrical characters of the male and female, illustrations of the species and bibliographical references. The same type of sheet was established for each genus then for each subfamily. The most useful characters were selected amongst those available and the presentation of the sheets is homogenous.This revision allows us to divide the Heligmonellidae into five subfamilies; the Tricholinstowiinae n. subfam. (two genera, ten species), parasites of Holarctic insectivores (Soricoidea), the Heligmonellinae (six genera, twelve species), parasites of Ethiopian and Oriental lagomorphs and rodents, and in some Neotropical hystricomorphs, the Pudicinae (nine genera, 45 species) parasites of New World hystricomorphs and sciuromorphs, the Brevistriatinae (ten genera, 61 species), parasites of Ethiopian and Oriental hystricomorphs and sciuromorphs, and the Nippostrongylinae, parasites of myomorphs, distributed worldwide. Only the first four subfamilies are treated in this work.The present work has the aim to provide researchers with a tool which will enable them to identify the known taxa as accurately as possible

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