Alpine Longhorn Beetle vs Rainbow Leaf Beetle

Side-by-side species comparison

Attribute Alpine Longhorn Beetle Rainbow Leaf Beetle
Scientific Name Rosalia alpina Chrysolina fastuosa
Order Coleoptera Coleoptera
Family Cerambycidae Chrysomelidae
Size 15-40 mm 5-7 mm
Habitat Woodlands Rivers & Streams
Diet Wood Feeders Herbivores
Regions Europe Europe
Conservation Vulnerable Least Concern

Alpine Longhorn Beetle

A strikingly beautiful blue-grey beetle with black spots, listed on multiple European conservation directives. Depends on old-growth beech forests with standing dead wood.

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Did You Know?

This beetle is so dependent on ancient beech forests that a single dead tree can support an isolated population for decades — but when that tree is gone, so is the colony.

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.