The Ricinidae are a family of a larger group Amblycera of the chewing lice.

The genus Ricinus (65 species) parasitize small or medium-sized Passeriformes.

The genus Trochiliphagus (13 species) is very similar to the former one, considered to be identical with that by some authors,[8] but infest hummingbirds.

The genus Trochiloecetes (30 species) also parasitize hummingbirds, but – unlike the former genera – their infestations are usually restricted to the head and neck of the host.

The latter two genera constitute the most important members of hummingbirds' parasite fauna, although their ecology is poorly understood.