Drone Fly vs Thick-headed Fly

Side-by-side species comparison

Attribute Drone Fly Thick-headed Fly
Scientific Name Eristalis tenax Physocephala rufipes
Order Diptera Diptera
Family Syrphidae Conopidae
Size 14-18 mm 8-14 mm
Habitat Ponds & Lakes Underground
Diet Nectar Feeders Parasitoids
Regions Europe, Asia, North America, Oceania Europe
Conservation Least Concern Least Concern

Drone Fly

A large hoverfly that is an excellent mimic of the honey bee, complete with similar coloring and buzzing flight. Its aquatic larva is known as a rat-tailed maggot due to its long breathing siphon.

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Did You Know?

The rat-tailed maggot larva can breathe in heavily polluted water by extending its telescoping tail siphon up to 10 centimeters to reach the surface air.

Thick-headed Fly

A wasp-mimicking fly that parasitizes bumblebees by injecting eggs into them mid-flight.

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Did You Know?

Infected bumblebees bury themselves in soil where the fly larva pupates.