Milkweed Assassin Bug vs False Stable Fly

Side-by-side species comparison

Attribute Milkweed Assassin Bug False Stable Fly
Scientific Name Zelus longipes Muscina stabulans
Order Hemiptera Diptera
Family Reduviidae Muscidae
Size 16-20 mm 7-10 mm
Habitat Gardens Farmland
Diet Predators Predators
Regions North America, Central America, South America Europe, North America, Asia
Conservation Least Concern Least Concern

Milkweed Assassin Bug

A slender, brightly colored assassin bug with red and black markings. It is a generalist predator common in gardens and agricultural fields.

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Did You Know?

It coats its legs with sticky resin to trap small insects, functioning as a living flypaper strip.

False Stable Fly

A robust fly resembling a large house fly with reddish-yellow patches at the wing base. Larvae can be facultative predators of other fly larvae.

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Did You Know?

Its predatory larvae sometimes consume house fly larvae, making it an accidental biocontrol agent.