




Stomoxys calcitrans
Stable flies are pesky little insects that look like house flies but have a painful bite! They love to hang around farms and grassy areas, especially where animals are.
Habitat: Grasslands
The Stable Fly is a medium-sized, grayish-brown fly with four dark stripes on its thorax and a distinct checkerboard pattern on its abdomen. It has a stiff, bayonet-like proboscis that juts forward, making it visually different from the similar-looking house fly.





Category
InsectsRarity
Common
Danger
2/5 · Low
Snaps
2
Both male and female stable flies must drink blood to survive and lay eggs!
Stable flies are strong flyers, able to travel miles to find a meal.
Their bites can be quite painful, much more than a mosquito's nip!
They like to bite animals on their legs and bellies, even humans!
Stable Fly can pierce tough animal skin because it has a sharp, needle-like mouthpart that helps them drink blood.
Stable Fly can dodge predators with swift, erratic flight patterns, making it very hard for birds to catch them.
Stable Fly can multiply quickly because females lay hundreds of eggs that hatch in days, ensuring many new flies.
These flies drink blood from warm-blooded animals, needing it to live and lay eggs.
Age differences: Larvae eat decaying plant matter, but adults feed exclusively on blood.
Social animals live in organized groups, cooperating for survival benefits such as foraging, defense, and raising offspring.
Grassland habitats are terrestrial biomes dominated by grasses and herbaceous plants, supporting a variety of grazing animals.
Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night.
This trait identifies organisms that exhibit exceptional swiftness in movement for hunting, escape, or travel.
Vampiric organisms are those that obtain nutrients by feeding on the blood or bodily fluids of other animals.
No aliases listed yet.
Danger
2/5 · Low
If you see a stable fly, try not to swat at it. Move away gently to avoid getting bitten.
The easiest way to identify Stable Fly is to use the Snappit nature identifier app.
10-14 mm
5-7 mm
10-20 days
8 km/h
These flies drink blood from warm-blooded animals, needing it to live and lay eggs.
Grasslands
Pursuit
Zoom in to split clusters and explore where this object has been snapped.
Arkansas, US
You might spot Pear-Shaped Puffball and American Beautyberry.
View guide →

Indiana, US
You might spot Sassafras, Eastern Skunk Cabbage, and Cardinal Flower.
View guide →