Picture-winged Fly – Tritoxa incurva

Picture-winged Fly – Tritoxa incurva
Order Diptera / Family Ulidiidae
— picture-winged flies
Insects & Spiders | Flies Index | Tachinidae | Dung Flies | Bee Flies | Robber Flies
Live adult picture-winged flies photographed in the wild at Ogle County, Illinois, USA.

Picture-winged Fly - Tritoxa incurva

There are 133 species of picture-wing flies in 41 genera in North America. The family was known as Otitidae for many years, but Ulidiidae has recently been shown to have priority. Many sources are still using the old family name.

Larvae of most species feed on decaying plant material and rotting fruit. They are not agricultural pests like the family Tephritidae (fruit flies)for which they are often mistaken, because they do not feed on fresh, healthy fruit. These flies are found from May till late summer, at forest edges and weedy fields.

Picture-winged Fly - Tritoxa incurva


  1. Bugguide.net, Tritoxa incurva
Flies of North America – Order Diptera. Flies are prevalent in virtually all habitats, with over 16,000 species in North America. Flies can be distinguished from all other insects in that they only have one pair of normal wings. The other pair has evolved into small ball-like structures called halteres. Most flies have compound eyes and mouthparts adapted for piercing, lapping or sucking fluids.
Syrphidae | Flies Index | Tachinidae | Bee Flies | Robber Flies