Diplogastridae

Pristionchus is a genus of nematodes (roundworms) in the family Diplogastridae that currently includes more than 50 described species. They are known mainly as non-parasitic associates of insects, especially beetles, while others have been reported from soil, organic matter, or rotting wood. The genus includes P. pacificus, a satellite model organism to the well-studied nematode Caenorhabditis elegans.

Diplogaster is a genus of nematodes belonging to the family Diplogastridae.

Micoletzkya is a genus of predatory bark-beetle-associated nematodes in the family Diplogastridae. The genus was named for the Austrian nematologist Heinrich Micoletzky. As of 2013 it consists of 25 described species.

Mononchoides is a genus of nematodes belonging to the family Diplogastridae.

Allodiplogaster is a genus of nematodes (roundworms) in the family Diplogastridae that currently includes about 35 described species.