The Stable Fly (Stomoxys spp.) also called the barn fly, biting house fly, dog fly or power mower fly, is lighter in colour than the common house fly and somewhat smaller in size, generally about 5-7mm in length. Unlike a house fly, its mouth parts have biting structures, rather than those built for sponging. Both male and female Stable Flies feed predominately on animals (mostly horses and cattle). However, they are known to bite humans in the absence of an animal host.
Stable Flies can be found worldwide wherever suitable weather and feeding conditions are present. Their feeding increases during warm weather, and decreases during rainy weather. They are daytime feeders, locating their host by sight and feeding from several hosts until full. After feeding Stable Flies are very sluggish and rest nearby their host in a sunny spot.
The Stable Fly is reported to be a possible vector of trypanosoma evansi, t.brucei, t. cazalboui, t. pecaudia, brucellosis, swine erysipelcs, equine Infectious anemia, African horse sickness, fowlpox, and bacillus anthracis, which causes anthrax in domestic animals and humans. The accumulation of Stable Fly bites can also cause anaemia and weight loss in livestock, a significant loss in milk production in dairy cattle and destroy cattle hides, causing economic losses in livestock related industries.