[8] However Diphtherophoridae was elevated to superfamily rank, and the subfamily Trichodorinae became a full-fledged family.

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

[15] The two largest genera have didelphic females (two genital tracts), and are distributed worldwide.

[4] The name "stubby-root" comes from the effect of the nematodes on the root system which appears "stubby" or stunted.

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