Owl Moth vs Klamath Weed Beetle

Side-by-side species comparison

Attribute Owl Moth Klamath Weed Beetle
Scientific Name Brahmaea wallichii Chrysolina quadrigemina
Order Lepidoptera Coleoptera
Family Brahmaeidae Chrysomelidae
Size 130-160 mm wingspan 5-7 mm
Habitat Mountains Grasslands
Diet Herbivores Herbivores
Regions Asia Europe (native), introduced to North America, Australia
Conservation Data Deficient Least Concern

Owl Moth

A large moth with intricate swirling wing patterns resembling owl feathers.

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Did You Know?

Its caterpillars raise their heads and display eyespots when threatened.

Klamath Weed Beetle

A dark bronze to coppery-brown beetle with a convex, heavily punctured body. It was introduced to control the invasive Klamath weed (St. John's wort) and became a classic biocontrol success story.

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Did You Know?

Its introduction to California in the 1940s reduced Klamath weed infestations by over 99%, saving millions of acres of rangeland.