Syllidae Grube, 1850
Prosphaerosyllis adelae (San Martín, 1984)
Prosphaerosyllis battiri San Martin, 2005
Prosphaerosyllis brandhorsti (Hartmann-Schröder, 1965)
Prosphaerosyllis brevicirra (Hartmann-Schröder, 1960)
Prosphaerosyllis campoyi (San Martín, Acero, Contonente & Gomez, 1982)
Prosphaerosyllis isabellae (Nogueira, San Martín & Amaral, 2001)
Prosphaerosyllis longicauda (Webster & Benedict, 1887)
Prosphaerosyllis longipapillata (Hartmann-Schröder, 1979)
Prosphaerosyllis magnoculata (Hartmann-Schröder, 1986)
Prosphaerosyllis multipapillata (Hartmann-Schröder, 1979)
Prosphaerosyllis nathani San Martín & López, 1998
Prosphaerosyllis opisthoculata (Hartmann-Schröder, 1979)
Prosphaerosyllis papillosissima (Hartmann-Schröder, 1979)
Prosphaerosyllis sexpappilata (Hartmann-Schröder, 1979)
Prosphaerosyllis tetralix (Eliason, 1920)
Prosphaerosyllis xarifae (Hartmann-Schröder, 1960)
