Klamath Weed Beetle vs Saw-toothed Prionine
Side-by-side species comparison
| Attribute | Klamath Weed Beetle | Saw-toothed Prionine |
|---|---|---|
| Scientific Name | Chrysolina quadrigemina | Dorysthenes buquetii |
| Order | Coleoptera | Coleoptera |
| Family | Chrysomelidae | Cerambycidae |
| Size | 5-7 mm | 35-55 mm |
| Habitat | Grasslands | Farmland |
| Diet | Herbivores | Root Feeders |
| Regions | Europe (native), introduced to North America, Australia | Thailand, Vietnam, Laos, Cambodia, Myanmar |
| Conservation | Least Concern | Least Concern |
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.
Did You Know?
Its introduction to California in the 1940s reduced Klamath weed infestations by over 99%, saving millions of acres of rangeland.
Saw-toothed Prionine
A large prionine beetle with strongly serrated antennae and a dark reddish-brown body, found across mainland Southeast Asia. It is a significant pest of sugarcane, with larvae boring into the root crown. Adults emerge during the monsoon season.
Did You Know?
In Thailand, adults are attracted to lights in huge numbers during the monsoon and are collected for human consumption.