Haplognathia

Haplognathia is a genus of worms belonging to the family Haplognathiidae.
The species of this genus are found in Europe, Northern Africa, and the Pacific Ocean.
Species:

Haplognathia asymmetrica
Haplognathia belizensis
Haplognathia filum
Haplognathia gubbarnorum
Haplognathia lunulifera
Haplognathia rosea
Haplognathia ruberrima
Haplognathia rubromaculata
Haplognathia rufa
''Haplognathia simplex''