Assassin Bug vs Myiasis-Causing Flesh Fly

Side-by-side species comparison

Attribute Assassin Bug Myiasis-Causing Flesh Fly
Scientific Name Zelus renardii Wohlfahrtia vigil
Order Hemiptera Diptera
Family Reduviidae Sarcophagidae
Size 12-20 mm 10-14 mm
Habitat Farmland Farmland
Diet Predators Parasites
Regions North America, South America North America, especially northern United States and Canada
Conservation Least Concern Least Concern

Assassin Bug

Ambush predators that impale prey with their curved beak and inject lethal saliva. Some species coat their legs with sticky plant resin to trap prey. Named for their hunting strategy.

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Did You Know?

Some assassin bugs stack the corpses of their prey on their backs as camouflage and armor — creating a gruesome shield of dead ants and other insects.

Myiasis-Causing Flesh Fly

A large flesh fly found in North America that causes obligate dermal myiasis in small animals including rabbits, mink, and fox kits on fur farms. Females deposit active larvae on the unbroken skin of young animals, and larvae burrow into subcutaneous tissue. Human cases are rare but documented in infants.

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Did You Know?

It preferentially attacks the young of furbearing animals, causing significant losses on mink and fox fur farms in North America.