| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Haplosyllis aberrans (Fauvel, 1939) |
Western Central Atlantic | ||
| Haplosyllis agelas Uebelacker, 1982 |
Western Central Atlantic | ||
| Haplosyllis chamaeleon Laubier, 1960 |
Mediterranean Sea | ||
| Haplosyllis djiboutiensis (Gravier, 1900) |
Western Indian Ocean | ||
| Haplosyllis floridana (Augener, 1924) |
Western Central Atlantic | ||
| Haplosyllis granulosa (Lattig, Martin & San Martin, 2007) |
Mediterranean Sea | ||
| Haplosyllis spongicola (Grube, 1855) |
Sponge worm | Indo-Pacific, Western Atlantic and the Mediterranean | |
| Haplosyllis spongiphila (Verrill, 1885) |
Northeast Pacific |