Paratrichodorus is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae family (trichorids), being one of five genera.

[4] Siddiqi based the separation on the position of the gland nuclei and the type of pharyngo-intestinal junction.

Using the same characteristics as those establishing the genus, Siddiqi described three subgenera, Paratrichodorus, Atlantadorus and Nanidorus, but Decraemer did not support the validity of this.

At least in the case of Nanidorus, phylogenetic analysis has supported its recognition as a separate genus, although clustering with Trichodorus rather than its parent Paratrichodorus.

[11] At that time Trichodorus christie (=Paratrichodorus minor) was recognised as a pest of crops in Florida.