Ragweed Leaf Beetle vs Rainbow Leaf Beetle

Side-by-side species comparison

Attribute Ragweed Leaf Beetle Rainbow Leaf Beetle
Scientific Name Zygogramma suturalis Chrysolina fastuosa
Order Coleoptera Coleoptera
Family Chrysomelidae Chrysomelidae
Size 6-8 mm 5-7 mm
Habitat Grasslands Rivers & Streams
Diet Herbivores Herbivores
Regions North America (native), introduced to Russia, China, Europe Europe
Conservation Least Concern Least Concern

Ragweed Leaf Beetle

A brown beetle with dark longitudinal stripes on the elytra, introduced to several countries as a biocontrol agent against common ragweed. Both adults and larvae feed on ragweed foliage.

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Did You Know?

It was introduced from North America to the former Soviet Union in the 1970s as biological control against ragweed, a major hay fever allergen source.

Rainbow Leaf Beetle

A metallic multicolored beetle with iridescent green, blue, and purple stripes.

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Did You Know?

Its rainbow coloration is produced by thin-film interference in its cuticle.