Diplotriaenidae
# Diplotriaenidae

Diplotriaenidae is a family of spirurian nematodes. Like all their relatives, they have neither a circulatory a or respiratory system. They are the only family in superfamily Diplotriaenoidea, if the Oswaldofilariidae are correctly placed with the Filarioidea and not here.

## Systematics

Subfamilies and genera of Diplotriaenidae are:

Subfamily Diplotriaeninae

* Quadriplotriaena
* Diplotriaena - includes Diplotriaenoides
* Chabaudiella

Subfamily Dicheilonematinae

* Monopetalonema - includes Politospiculum and Ornithosetaria
* Petrovifilaria
* Dicheilonema - includes Contortospiculum
* Hastospiculum - includes Setarospiculum
* Hamatospiculum - includes Parhamatospiculum, Tytofilaria, Oceanifilaria
* Serratospiculum
* Heterospiculum - includes Heterospiculoides
* Serratospiculoides
