Colorado Three-lined Leaf Beetle vs Longhorn Harlequin Beetle

Side-by-side species comparison

Attribute Colorado Three-lined Leaf Beetle Longhorn Harlequin Beetle
Scientific Name Lema trivittata Aristobia approximator
Order Coleoptera Coleoptera
Family Chrysomelidae Cerambycidae
Size 5-6 mm 30-55 mm
Habitat Heathland Farmland
Diet Herbivores Wood Feeders
Regions Western North America Southeast Asia (Malaysia, Indonesia, Thailand, Philippines, Vietnam)
Conservation Least Concern Least Concern

Colorado Three-lined Leaf Beetle

A small, elongated beetle with an orange-yellow body and three dark longitudinal stripes on the elytra. It feeds on tomatillo and ground cherry in the western United States.

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Did You Know?

Like other Lema species, the larvae cover themselves in their own frass, which may serve both as camouflage and as a deterrent to parasitoids.

Longhorn Harlequin Beetle

A large longhorn beetle with attractive pale grey elytra marked with dark bands and spots in a harlequin pattern. Antennae are notably long, banded in black and grey.

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Did You Know?

It is a significant pest of cacao plantations in Southeast Asia, with larvae tunneling through tree trunks causing branch dieback.