Semaphore Fly vs Small-headed Fly

Side-by-side species comparison

Attribute Semaphore Fly Small-headed Fly
Scientific Name Poecilobothrus nobilitatus Ogcodes pallidipennis
Order Diptera Diptera
Family Dolichopodidae Acroceridae
Size 5-7 mm 4-8 mm
Habitat Gardens Grasslands
Diet Omnivores Parasitoids
Regions Europe Europe
Conservation Least Concern Least Concern

Semaphore Fly

A tiny metallic green fly where males have conspicuous white-tipped wings used in semaphore-like courtship displays. It is extremely common around garden ponds and puddles.

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Did You Know?

Males stand on mud and wave their white-tipped wings like semaphore flags to attract females watching nearby.

Small-headed Fly

A round-bodied fly with a tiny head whose larva parasitizes spiders from the inside.

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Did You Know?

The first-instar larva attaches to a passing spider and burrows inside to feed.