Heptapteridae Gill, 1861
Phreatobius cisternarum Goeldi, 1905
Phreatobius dracunculus Shibatta, Muriel-Cunha & De Pinna, 2007
Phreatobius sanguijuela Fernández, Saucedo, Carvajal-Vallejos & Schaefer, 2007
