Systematics of the monodelphic species of trichodoridae (nematoda: diphtherophorina) with descriptions of a new genus and four new species.

To show the relationship of the monodelphic species of Trichodoridae with the nominal taxa, the genus Monotrichodorus is redefined, with the addition of one new species. The new genus Allotrichodorus is proposed on the basis of new species found in Brazil; and one new species is described in the genus Paratrichodorus.