Chrysops species and Tabanus species
host: large mammals and humans
skin surfaces when feeding around lakes and ponds
stabling cattle and horses during the day can help
Deerflies = Chrysops
Horseflies = Tabanus
only females feed on vertebrate blood and they feed in vicinity of open water
underside of abdomen, around navel, legs, neck, withers
vectors for anthrax, anaplasmosis, and Equine infectious anemia