Subuluridae

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.

Systematics

Several subfamilies are very small or even monotypic, and might not be valid. Spiruroides might actually belong in the Gongylonematidae, which are not closely related to the Subuluridae as far as Spiruria go.

Subfamily Allodapinae Inglis, 1958Allodapa Diesing, 1861Aulonocephalus Chandler, 1935
Subfamily Labiobulurinae Quentin, 1969Cyclobulura Quentin, 1977Labiobulura Skrjabin & Schikhobalova, 1948Tarsubulura Inglis, 1958
Subfamily Leipoanematinae Chabaud, 1957Leipoanema Johnston & Mawson, 1942
Subfamily Parasubulurinae Berghe & Vuylsteke, 1938Parasubulura Berghe & Vuylsteke, 1938
Subfamily Subulurinae Travassos, 1914Inglisubulura Devamma, 1977Oxynema Linstow, 1899Primasubulura Inglis, 1958Spiruroides Cameron & Parnell, 1933 Subulura Molin, 1860Travassallodapa López-Neyra, 1945