Allantonematid nematodes infect a variety of insects including beetles, butterflies, flies, thrips, ants, and more.

Thripinema fuscum is a Allantonematidae nematode that, can naturally decrease the population of Frankliniella fusca, Tobacco thrips.

[5] Infertility of F. fusca is caused by damage to ovarioles and loss of eggs when infected by T.

[6]Parasitylenchus bifurcatus parasitizes Harmonia axyridis, a beetle introduced to Europe from central and South Asia.

These include: The systematics of the Allantonematidae are complicated due to various re-classifications of Allantonematid genera first classified by morphological characters.