Deer flies are smaller than horse flies at about ¼ to ½-inch long and have clear or smoky-grey wings with dark bands on them with green eyes and greenish-yellow bodies. Similar to horse flies ...

Horse flies are larger than common flies, such as stable or horn flies, growing up to an inch long. Some are all black while many have colored patterns on their abdomen and wings.

Deer flies are smaller than horse flies at about ¼ to ½-inch long and have clear or smoky-grey wings with dark bands on them with green eyes and greenish-yellow bodies. Similar to horse flies ...