Flat-footed Scuttle Fly vs Petroleum Fly

Side-by-side species comparison

Attribute Flat-footed Scuttle Fly Petroleum Fly
Scientific Name Metopina oligoneura Helaeomyia petrolei
Order Diptera Diptera
Family Phoridae Ephydridae
Size 1-2 mm 5 mm
Habitat Woodlands Underground
Diet Detritivores Omnivores
Regions Europe, Asia North America
Conservation Least Concern Least Concern

Flat-footed Scuttle Fly

A minute brown phorid fly with broad flattened tarsi and reduced wing venation. It is associated with ant nests where it scavenges on refuse and dead ants.

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Did You Know?

It lives inside ant colonies as a tolerated guest, feeding on the waste materials that ants discard in their refuse chambers.

Petroleum Fly

The only insect whose larvae develop in crude petroleum. Found in natural oil seeps in California, including the La Brea Tar Pits. Larvae eat insects trapped in the oil.

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Did You Know?

This is the only animal on Earth that develops in crude oil — a substance toxic to virtually all other life. Its larvae swim through petroleum and breathe through snorkel-like tubes.