[ref. ID; 1663 (Robert W. Pennak, 1978) (Aquatic earthworms)]

Order Haplotaxida

• Family Aeolosomatidae

  Genus: Aeolosoma

• Family Opistocystidae

  Genus: Opistocysta

• Family Naididae

  Genus: Allonais, Amphichaeta, Arcteonais, Chaetogaster, Dero, Haemonais, Nais, Ophidonais, Paranais, Pristina, Slavina, Specaria, Stylaria, Uncinais, Vejdovskyella

• Family Haplotaxidae

  Genus: Haplotaxis

• Family Enchytraeidae

• Family Tubificidae

  Genus: Aulodrilus, Bothrioneurum, Branchiura, Clitellio, Ilyodrilus, Isochaeta, Limnodrilus, Monopylephorus, Potamothrix, Psammoryctides, Rhyacodrillus, Telmatodrilus, Tubifex

• Family Lumbricidae

• Family Megascolecidae

• Family Glossoscolecidae

Order Lumbriculida

• Family Lumbriculidae

  Genus: Eclipidrilus, Kincaidiana, Lumbriculus, Rhynchelmis, Stylodrilus