Cynanthus is a genus of hummingbird in the family Trochilidae. The species are found in Mexico and Central America.
Taxonomy The genus Cynanthus was introduced in 1827 by the English zoologist William Swainson. The name combines the Ancient Greek κυανος/kuanos meaning "dark-blue" with ανθος/anthos meaning "blossom" or "flower". Swainson listed four species in his new genus but did not specify the type. In 1907 the American ornithologist Witmer Stone designated the type as Cynanthus latirostris Swainson, 1827, the broad-billed hummingbird.
A 2014 molecular phylogenetic study by Jimmy McGuire and collaborators found that the genus Cynanthus was sister to the genus Chlorostilbon containing the emeralds.
Species The genus contains the following six species: Image Common name Scientific name DistributionBroad-billed hummingbirdCynanthus latirostrisTres Marias hummingbirdCynanthus lawrenceiTurquoise-crowned hummingbirdCynanthus doubledayiGolden-crowned emeraldCynanthus auricepswestern Mexico (southern Sinaloa to Durango, Guerrero, and Oaxaca)Cozumel emeraldCynanthus forficatusCanivet's emeraldCynanthus canivetii
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