πŸͺ° Flies

Yellow Swarming Fly

Thaumatomyia notata

About 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.

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Did You Know?

Can form hibernation clusters of millions in attic spaces, with individual aggregations weighing several kilograms.

How to Identify Yellow Swarming Fly

Yellow Swarming Fly (Thaumatomyia notata) belongs to the order Diptera, family Chloropidae. Adults typically measure 2-2.5 mm.

Yellow Swarming Fly Habitat

Yellow Swarming Fly is found in grasslands habitats, particularly across Europe. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

Yellow Swarming Fly Diet and Feeding

Yellow Swarming Fly is a predatory species that actively hunts and feeds on other insects and small invertebrates. As a predator, it helps control populations of pest species and maintains ecological balance.

Where Is Yellow Swarming Fly Found?

Yellow Swarming Fly can be found in Europe, where it inhabits grasslands environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Yellow Swarming Fly can be found

Is Yellow Swarming Fly Dangerous?

Yellow Swarming 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.

Yellow Swarming Fly Role in Nature

Yellow Swarming Fly serves as a natural predator, helping to control populations of other insects. Predatory insects are valuable in both natural ecosystems and agriculture, where they reduce the numbers of pest species without the need for chemical pesticides.

Seasonal Activity

Jan
Feb
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Dec
Peak activity Moderate Low / dormant

Frequently Asked Questions About Yellow Swarming Fly

What does Yellow Swarming Fly look like?

The Yellow Swarming Fly typically measures 2-2.5 mm.

Where is Yellow Swarming Fly found?

The Yellow Swarming Fly is found in Europe and typically inhabits grasslands environments.

What does Yellow Swarming Fly eat?

The Yellow Swarming Fly is a predator that hunts and feeds on other insects and small invertebrates.

Is Yellow Swarming Fly dangerous to humans?

The Yellow Swarming Fly is generally harmless to humans. It does not bite or sting and poses no significant health risk.

What is an interesting fact about Yellow Swarming Fly?

Can form hibernation clusters of millions in attic spaces, with individual aggregations weighing several kilograms.

Cite This Page

APA:
InsectDiscover. (2026). Yellow Swarming Fly (Thaumatomyia notata). Retrieved from https://insectdiscover.com/insect/yellow-swarming-fly

MLA:
"Yellow Swarming Fly." InsectDiscover, https://insectdiscover.com/insect/yellow-swarming-fly.