← Back to Directory
πŸͺ² Beetles

Klamath Weed Beetle

Chrysolina quadrigemina

About

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.

πŸ’‘

Did You Know?

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