Western Corsair vs Spotted Longhorn Beetle

Side-by-side species comparison

Attribute Western Corsair Spotted Longhorn Beetle
Scientific Name Rasahus thoracicus Leptura quadrifasciata
Order Hemiptera Coleoptera
Family Reduviidae Cerambycidae
Size 18-23 mm 11-20mm
Habitat Woodlands Woodlands
Diet Predators Wood Feeders
Regions Western North America, Mexico Europe, Asia
Conservation Least Concern Least Concern

Western Corsair

A large, dark brown assassin bug found in western North America that occasionally enters homes and can deliver an intensely painful bite. It is nocturnal and attracted to lights. It preys on a variety of insects around buildings.

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Did You Know?

Its bite is so painful that it is sometimes mistaken for a scorpion sting, and the pain can persist for hours, earning it frequent complaints to pest control services.

Spotted Longhorn Beetle

A black and yellow banded longhorn beetle with a tapered body and long antennae. It visits flowers in sunlit woodland clearings.

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Did You Know?

The larvae take up to three years to develop inside decaying birch and oak wood before emerging as adults.