Genus MESEMBRIUS Rondani

Mesembrius Rondani, 1857: 50 . Type species: Helophilus peregrines Loew, 1846, by monotypy.

Prionotomyia Bigot, 1883: 150 . Type species: Prionotomyia tarsatus Bigot, 1883, by monotypy.

Tityusia Hull, 1937: 118 . Type species: Tityusia regulus Hull, 1937, by original designation.