Fall Webworm vs Atlas Longhorn

Side-by-side species comparison

Attribute Fall Webworm Atlas Longhorn
Scientific Name Hyphantria cunea Macrotoma palmata
Order Lepidoptera Coleoptera
Family Erebidae Cerambycidae
Size 25-42 mm wingspan 40-65 mm
Habitat Grasslands Grasslands
Diet Herbivores Wood Feeders
Regions North America, Europe, Asia West Africa, Central Africa, East Africa
Conservation Not Evaluated Least Concern

Fall Webworm

A native North American moth whose caterpillars build communal silk webs on tree branches. It has become invasive in Europe and Asia.

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Did You Know?

Unlike tent caterpillars, fall webworm nests enclose the foliage the larvae are feeding on.

Atlas Longhorn

A large prionine beetle from tropical Africa with palmate (comb-like) antennae in males. The body is dark brown with a robust build. Larvae develop in large fallen trunks of savanna trees.

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Did You Know?

The elaborate comb-like antennae of males are thought to detect female pheromones with extreme sensitivity.