A number of species were formerly placed in the genus Musca.

The coat of arms formerly placed in the yellow band has been removed.

A number of species where formerly placed in the Dysgonia genus.

Several species formerly placed here are now assigned to other genera.

About 60% of the species formerly placed here are now usually separated in Telophorus.

They are related to (and were formerly placed within) the Oneirodidae.

Three other species, formerly placed here, are now in Colaptes.

All these species were formerly placed in the related genus Venus.

Some species formerly placed with them are nowadays considered more distinct.

Other North American species were formerly placed in this genus.