(Trefusia) (Trefusia) is a biological genus in the family Trefusiidae and order Enoplida.
Trefusia axonolaimoides
Trefusia cornea
Trefusia filicauda
Trefusia filum
Trefusia helgolandica
Trefusia litoralis
Trefusia longicauda
Trefusia magna
Trefusia obtusicaudata
Trefusia varians
Trefusia zostericola
Alaimonemella
Cytolaimium
Halanonchus
Rhabdocoma
Trefusia