Bearded Robber Fly vs Snail-killing Fly

Side-by-side species comparison

Attribute Bearded Robber Fly Snail-killing Fly
Scientific Name Machimus atricapillus Tetanocera elata
Order Diptera Diptera
Family Asilidae Sciomyzidae
Size 12-18 mm 7-10 mm
Habitat Heathland Wetlands
Diet Herbivores Predators
Regions Europe Europe, North America
Conservation Least Concern Least Concern

Bearded Robber Fly

A common European robber fly with a prominent mystax (facial beard) of bristles that protect its face during prey capture. It hunts from perches on bare ground and low vegetation.

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Did You Know?

Its dense facial beard of stiff bristles acts as a protective cage, shielding its eyes from the thrashing legs of captured prey.

Snail-killing Fly

A wetland fly whose larvae are specialized predators or parasitoids of land snails. It has been investigated as a biocontrol agent for pest snails.

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Did You Know?

Larvae enter the snail's shell and consume it alive over several days.