Chabaudechina n.g. (Nematoda: Seuratidae), with the description of two new species from dasyurid marsupials from Australia.

Chabaudechina presidentei n. g., n. sp. (Seuratidae: Echinonematinae) is described from Sminthopsis virginiae, S. macroura and S. youngsoni (Dasyuridae) from northern Australia. The new genus can be distinguished from all other genera of the Echinonematinae by the morphology and number of rows of cephalic hooks as well as the morphology and arrangement of body hooks and spines. The genus otherwise resembles the echinonematines in spicule morphology and arrangement of cloacal papillae. It resembles Inglechina and Linstowinema in having a triangular mouth opening, no lips and two pairs of double cephalic papillae. C. presidentei differs from C. haycocki n. sp. from Dasycercus cristicauda from central Australia in the number of caudal papillae, the proportions of the alae surrounding the cloaca and the posterior ventral cuticular spination of the male. Chabaudechina sp., found in Planigale spp., could not be identified to species level.