Carpenterworm Moth vs Fall Webworm

Side-by-side species comparison

Attribute Carpenterworm Moth Fall Webworm
Scientific Name Prionoxystus robiniae Hyphantria cunea
Order Lepidoptera Lepidoptera
Family Cossidae Erebidae
Size 40–75 mm wingspan 25-42 mm wingspan
Habitat Forests Grasslands
Diet Wood Feeders Herbivores
Regions North America North America, Europe, Asia
Conservation Not Evaluated Not Evaluated

Carpenterworm Moth

A large North American moth whose larvae bore into the heartwood of oaks, elms, and other hardwoods. It is the most destructive wood-boring moth in eastern forests.

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Did You Know?

Larvae create tunnels up to 25 mm wide and take three to four years to complete development.

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.