Chlorotabanus crepuscularis

Chlorotabanus crepuscularis is a species of horse flies in the family Tabanidae.^[2][3] This species is the only green tabanid in North America. It can be found from Texas to Delaware. In Florida, this sanguinivorous (blood-feeding) fly is seen as an adult from March through September, but is most active from May to mid-July.

Chlorotabanus crepuscularis
Chlorotabanus crepuscularis (Green horse fly)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Tabanidae
Subfamily:	Tabaninae
Tribe:	Diachlorini
Genus:	Chlorotabanus
Species:	C. crepuscularis
Binomial name
Chlorotabanus crepuscularis Bequaert, 1926[1]
Synonyms
Tabanus flavus Macquart, 1834

The female has the ability to sense carbon dioxide, which helps it feed on mammals, especially during the night when it is most active. The larvae are also predaceous and live in the soil adjacent to water and on floating vegetation but can also live in forest sand. The insect's blood is blue. The fly's eyes are brown, but glow yellow under 385 nm UV light.^{[citation needed]}