Progressive Bee Fly vs Secondary Screwworm Fly

Side-by-side species comparison

Attribute Progressive Bee Fly Secondary Screwworm Fly
Scientific Name Exoprosopa fasciata Cochliomyia macellaria
Order Diptera Diptera
Family Bombyliidae Calliphoridae
Size 10-16 mm 8-12 mm
Habitat Deserts & Drylands Farmland
Diet Nectar Feeders Carrion Feeders
Regions Africa, Asia North America, South America
Conservation Least Concern Least Concern

Progressive Bee Fly

A large bee fly with boldly banded wings in dark brown and clear patterns. It is a fast and agile flyer, frequently hovering at flowers in arid landscapes.

💡

Did You Know?

Its boldly patterned wings may serve as camouflage when resting on dappled ground in arid habitats.

Secondary Screwworm Fly

A blow fly that breeds in carrion and occasionally infests wounds in livestock. It is widely used in forensic studies in the Americas.

💡

Did You Know?

Unlike the primary screwworm, it only feeds on dead tissue rather than living flesh.