Yellow Fly vs Scarlet Robber Fly

Side-by-side species comparison

Attribute Yellow Fly Scarlet Robber Fly
Scientific Name Diachlorus ferrugatus Laphria flava
Order Diptera Diptera
Family Tabanidae Asilidae
Size 10-14 mm 15-25 mm
Habitat Beaches & Coastal Woodlands
Diet Blood Feeders Predators
Regions Southeastern North America, Central America Europe, Northern Asia
Conservation Least Concern Least Concern

Yellow Fly

A medium-sized yellowish horse fly notorious for its aggressive biting. It is particularly abundant in the coastal southeastern United States.

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Did You Know?

It is considered one of the most painful biting flies in the southeastern United States.

Scarlet Robber Fly

A bumblebee-mimicking robber fly covered in dense golden-yellow hair. It preys on insects visiting flowers at woodland edges.

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Did You Know?

Its dense yellow pile makes it one of the most convincing bumblebee mimics among robber flies.