Golden Sun Moth vs Knotgrass Leaf Beetle

Side-by-side species comparison

Attribute Golden Sun Moth Knotgrass Leaf Beetle
Scientific Name Synemon plana Chrysolina hyperici
Order Lepidoptera Coleoptera
Family Castniidae Chrysomelidae
Size 3-4 cm wingspan 5-7 mm
Habitat Grasslands Grasslands
Diet Root Feeders Herbivores
Regions Australia Europe (native), introduced to Australia and North America
Conservation Critically Endangered Least Concern

Golden Sun Moth

A day-flying moth with dull grey-brown forewings and brilliant orange-gold hindwings. It is critically threatened by the loss of native grasslands.

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Did You Know?

Larvae live underground feeding on grass roots for up to three years before emerging as adults that live only days.

Knotgrass Leaf Beetle

A rounded, metallic bronze to coppery-green beetle that was introduced to control St. John's wort. It has a smooth, convex body with fine punctation across the elytra.

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Did You Know?

Introduced to Australia in the 1930s, it was one of the earliest successful biological control agents used against a weed in that country.