title: On the Identity of the Genus CrassolabiumYeates, 1967 (Dorylaimida: Qudsianematidae).
abstract: The identity and taxonomy of the genus Crassolabium are discussed based on examination of material of C. australe, its type species and its comparison with Iberian species of close genera. The existence of refractive masses (thickenings) at the inner core of lateral lips, the most distinctive diagnostic feature of Crassolabium, is considered to be of minor taxonomical significance because of its interspecific and even intraspecific variability. It is concluded that Crassolabium and Thonus are identical, and a reversal of precedence among both genera is suggested. Crassolabium australe is re-described, and some comments are provided on C. robustum, the second species in the genus.
authors.affiliation: Departamento de Biología Animal, Vegetal y Ecología, Universidad de Jaén, Campus "Las Lagunillas" s/n, Edificio B3, 23071- Jaén, Spain Institute of Biological Research, Department of Plant and Animal Taxonomy and Ecology, Str. Republicii 48, RO-400015 Cluj-Napoca, Romania.
authors.forename: Reyes
authors.initials: R
authors.lastname: Peña-Santiago
authors.forename: Marcel
authors.initials: M
authors.lastname: Ciobanu