Black Horse Fly vs Hairy Maggot Blow Fly

Side-by-side species comparison

Attribute Black Horse Fly Hairy Maggot Blow Fly
Scientific Name Tabanus atratus Chrysomya rufifacies
Order Diptera Diptera
Family Tabanidae Calliphoridae
Size 20-28 mm 9-12 mm
Habitat Farmland Forests
Diet Blood Feeders Predators
Regions Eastern United States from the Great Plains to the Atlantic coast Australia, Asia, Americas
Conservation Least Concern Least Concern

Black Horse Fly

A very large entirely black horse fly and one of the biggest flies in North America. Females are persistent blood-feeders that can harass livestock and humans during summer months.

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Did You Know?

Its larvae are aquatic predators that live in muddy pond bottoms and can take up to two years to complete development.

Hairy Maggot Blow Fly

A blow fly whose larvae have distinctive fleshy projections giving them a hairy appearance. Its predatory larvae feed on other maggot species on carrion.

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Did You Know?

Its larvae are facultatively predatory and will cannibalize other maggot species sharing the same carcass.