Forest Tent Caterpillar Moth vs Mustard Beetle

Side-by-side species comparison

Attribute Forest Tent Caterpillar Moth Mustard Beetle
Scientific Name Malacosoma disstria Phaedon cochleariae
Order Lepidoptera Coleoptera
Family Lasiocampidae Chrysomelidae
Size 25–35 mm wingspan 3-4 mm
Habitat Forests Farmland
Diet Herbivores Herbivores
Regions North America Europe
Conservation Not Evaluated Least Concern

Forest Tent Caterpillar Moth

A widespread North American moth whose caterpillars defoliate vast areas of hardwood forest. Despite the name, they form silken mats rather than true tents.

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Did You Know?

Outbreaks can defoliate millions of hectares of forest, though healthy trees usually recover with new leaves.

Mustard Beetle

A small metallic blue-black beetle that feeds on watercress, mustard and other crucifers. Both adults and larvae damage crops. Common in damp habitats near streams.

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Did You Know?

Commercial watercress growers regard this tiny beetle as one of their most persistent pest problems.