About one dozen, see text Subuluridae is a family of spirurian nematodes which, together with the two species of Maupasinidae, make up the superfamily Subuluroidea.

Like all nematodes, they have neither a circulatory nor a respiratory system.

They number about one dozen genera and somewhat over 100 species, and are parasites of amniotes, chiefly birds and mammals.

Spiruroides might actually belong in the Gongylonematidae, which are not closely related to the Subuluridae as far as Spiruria go.

This Secernentea roundworm- related article is a stub.