Autumn Horse Fly vs Common Moth Fly

Side-by-side species comparison

Attribute Autumn Horse Fly Common Moth Fly
Scientific Name Tabanus autumnalis Psychoda alternata
Order Diptera Diptera
Family Tabanidae Psychodidae
Size 16-22 mm 2-4 mm
Habitat Heathland Woodlands
Diet Blood Feeders Detritivores
Regions Europe, North Africa, Western Asia Cosmopolitan
Conservation Least Concern Least Concern

Autumn Horse Fly

A large greyish horse fly active in late summer and autumn. It has striking green-banded eyes and a persistent biting habit.

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Did You Know?

It is one of the few horse fly species that remains active well into October.

Common Moth Fly

A tiny grayish moth fly with broad, hairy wings giving it a distinctly moth-like appearance. Its wings are held flat over the body at rest, and it runs in short hops when disturbed.

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Did You Know?

Moth flies are important components of sewage treatment trickling filter beds where their larvae help break down waste.