Sweat Fly vs Yellow Swarming Fly
Side-by-side species comparison
| Attribute | Sweat Fly | Yellow Swarming Fly |
|---|---|---|
| Scientific Name | Hydrotaea irritans | Thaumatomyia notata |
| Order | Diptera | Diptera |
| Family | Muscidae | Chloropidae |
| Size | 5-7 mm | 2-2.5 mm |
| Habitat | Farmland | Grasslands |
| Diet | Dung Feeders | Predators |
| Regions | Europe, North America | Europe |
| Conservation | Least Concern | Least Concern |
Sweat Fly
A small dark fly attracted to perspiration on humans and livestock. It forms dense head-circling swarms in summer that can be extremely annoying.
Did You Know?
Swarms of these flies can reduce cattle weight gain by causing constant head-tossing behavior.
Yellow Swarming Fly
A tiny yellow fly famous for forming enormous hibernation aggregations in buildings, sometimes numbering millions. Larvae are predatory on root aphids in grassland.
Did You Know?
Can form hibernation clusters of millions in attic spaces, with individual aggregations weighing several kilograms.