About 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.
How to Identify Sweat Fly
Sweat Fly (Hydrotaea irritans) belongs to the order Diptera, family Muscidae. Adults typically measure 5-7 mm.
Sweat Fly Habitat
Sweat Fly is found in farmland habitats, particularly across Europe, North America. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.
Sweat Fly Diet and Feeding
Sweat Fly feeds on animal dung. Dung-feeding insects provide vital ecosystem services by breaking down and burying waste, improving soil fertility and reducing parasite transmission.
Where Is Sweat Fly Found?
Sweat Fly can be found in Europe, North America, where it inhabits farmland environments. Its distribution is influenced by climate, food availability, and habitat suitability.
Distribution Map
Where Sweat Fly can be found
Is Sweat Fly Dangerous?
Sweat Fly is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.
Sweat Fly Role in Nature
Sweat Fly plays a vital role in decomposition and nutrient recycling. By breaking down dead organic matter, it helps return nutrients to the soil, supporting plant growth and maintaining ecosystem health.
Seasonal Activity
Frequently Asked Questions About Sweat Fly
What does Sweat Fly look like?
The Sweat Fly typically measures 5-7 mm.
Where is Sweat Fly found?
The Sweat Fly is found in Europe, North America and typically inhabits farmland environments.
What does Sweat Fly eat?
The Sweat Fly feeds on animal dung.
Is Sweat Fly dangerous to humans?
The Sweat Fly is generally harmless to humans. It does not bite or sting and poses no significant health risk.
What is an interesting fact about Sweat Fly?
Swarms of these flies can reduce cattle weight gain by causing constant head-tossing behavior.
Cite This Page
APA:
InsectDiscover. (2026). Sweat Fly (Hydrotaea irritans). Retrieved from https://insectdiscover.com/insect/sweat-fly
MLA:
"Sweat Fly." InsectDiscover, https://insectdiscover.com/insect/sweat-fly.