Mellisuga is a genus of hummingbirds in the family Trochilidae. They are notable for being the first and second smallest bird species in the world.

The genus was introduced by the French zoologist Mathurin Jacques Brisson in 1760 with the vervain hummingbird as the type species. The name Mellisuga is a combination of the Latin words mel or mellis, meaning "honey" and sugere, meaning "to suck".

Extant species

The genus contains two species:

Genus Mellisuga – Brisson, 1760 – two species
Common nameScientific name and subspeciesRangeSize and ecologyIUCN status and estimated population
Bee hummingbird Male FemaleMellisuga helenae (Lembeye, 1850)Cuba and Isla de la JuventudSize: Habitat: Diet:NT
Vervain hummingbirdMellisuga minima (Linnaeus, 1758) Two subspecies M. m. minima (Linnaeus, 1758)M. m. vielloti (Shaw, 1812)Hispaniola (the Dominican Republic and Haiti) and JamaicaSize: Habitat: Diet:LC