| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Pionosyllis aciculata San Martín, 1990 |
Western Central Atlantic | ||
| Pionosyllis aciculogrossa San Martín, 1990 |
Western Central Atlantic | ||
| Pionosyllis articulata Kudenov & Harris, 1995 |
Eastern Pacific | ||
| Pionosyllis augeneri Hartmann-Schröder, 1979 |
Western Central Atlantic | ||
| Pionosyllis comosa Gravier, 1906 |
Antarctic | ||
| Pionosyllis compacta Malmgren, 1867 |
Arctic, Northwest Atlantic and Northeast Pacific | ||
| Pionosyllis dangrigae Russell, 1992 |
Western Central Atlantic | ||
| Pionosyllis dionisi Núñez & San Martín, 1991 |
Mediterranean Sea | ||
| Pionosyllis gesae Perkins, 1981 |
Eastern Central Pacific and Western Central Atlantic | ||
| Pionosyllis gigantea Moore, 1908 |
Giant red necklace-worm | Eastern Pacific | |
| Pionosyllis luquei San Martín, 1990 |
Western Central Atlantic and Eastern Pacific | ||
| Pionosyllis magnifica unspecified |
Northeast Pacific | ||
| Pionosyllis minuta (Pierantoni, 1903) |
Mediterranean Sea | ||
| Pionosyllis procera Hartman, 1965 |
Western Central Atlantic | ||
| Pionosyllis riojai San Martín, 1990 |
Western Central Atlantic | ||
| Pionosyllis singulariseta Russell, 1992 |
Western Central Atlantic | ||
| Pionosyllis spinosetosa San Martín, 1990 |
Western Central Atlantic | ||
| Pionosyllis templadoi San Martín-Peral, 1991 |
Western Central Atlantic |