Screwworm Fly vs Flower Longhorn

Side-by-side species comparison

Attribute Screwworm Fly Flower Longhorn
Scientific Name Cochliomyia hominivorax Pachyta quadrimaculata
Order Diptera Coleoptera
Family Calliphoridae Cerambycidae
Size 8-12 mm 11-20mm
Habitat Forests Forests
Diet Blood Feeders Root Feeders
Regions Central America, South America, Caribbean Europe, Asia
Conservation Least Concern Least Concern

Screwworm Fly

A devastating parasitic fly whose larvae feed on living tissue of warm-blooded animals. It was eradicated from North America using the sterile insect technique.

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Did You Know?

The sterile male release program that eradicated it from the US is considered one of the greatest triumphs in pest control history.

Flower Longhorn

A robust yellow longhorn beetle with four black spots on its elytra. It is a common visitor to umbelliferous flowers in northern forests.

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Did You Know?

Despite being a beetle it is frequently mistaken for a wasp due to its yellow and black patterning.