Cereal Leaf Beetle vs Ragwort Flea Beetle

Side-by-side species comparison

Attribute Cereal Leaf Beetle Ragwort Flea Beetle
Scientific Name Oulema melanopus Longitarsus jacobaeae
Order Coleoptera Coleoptera
Family Chrysomelidae Chrysomelidae
Size 4-5 mm 2-3 mm
Habitat Farmland Farmland
Diet Seed Feeders Root Feeders
Regions Europe, North America (invasive), Asia Europe
Conservation Least Concern Least Concern

Cereal Leaf Beetle

A small beetle with metallic blue-black elytra and a red-orange thorax. Its larvae strip the upper leaf surface of cereal crops.

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Did You Know?

Larvae carry a shield of their own faeces on their backs to deter predators and prevent desiccation.

Ragwort Flea Beetle

A small black flea beetle that feeds on ragwort plants. Successfully used as a biological control agent for invasive ragwort in Australia and New Zealand. Larvae mine in roots.

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Did You Know?

One of the most successful biological control agents ever used, dramatically reducing ragwort in multiple countries.