Black Blow Fly vs Mexican Cactus Fly

Side-by-side species comparison

Attribute Black Blow Fly Mexican Cactus Fly
Scientific Name Phormia regina Copestylum mexicanum
Order Diptera Diptera
Family Calliphoridae Syrphidae
Size 9-13 mm 12-18 mm
Habitat Farmland Deserts & Drylands
Diet Carrion Feeders Nectar Feeders
Regions North America, Europe North America, Central America
Conservation Least Concern Least Concern

Black Blow Fly

A dark metallic blow fly that is among the first insects to colonize a corpse. It is a key species in forensic entomology across North America.

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Did You Know?

It can detect a dead body from over a mile away using chemoreceptors on its antennae.

Mexican Cactus Fly

A large, dark hoverfly whose larvae develop in decaying cactus tissue. Adults are strong fliers visiting flowers in arid landscapes.

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Did You Know?

Larvae play an important ecological role in recycling decaying cactus material.