Eastern Tent Caterpillar Moth vs Japanese Giant Silkmoth

Side-by-side species comparison

Attribute Eastern Tent Caterpillar Moth Japanese Giant Silkmoth
Scientific Name Malacosoma americanum Saturnia japonica
Order Lepidoptera Lepidoptera
Family Lasiocampidae Saturniidae
Size 25–38 mm wingspan 85-120 mm wingspan
Habitat Grasslands Mountains
Diet Herbivores Omnivores
Regions Eastern North America Japan
Conservation Not Evaluated Least Concern

Eastern Tent Caterpillar Moth

A common moth whose caterpillars build conspicuous silk tents in the forks of cherry and apple trees. Colonies cooperate to build and expand their communal shelter.

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Did You Know?

Caterpillars lay silk trail pheromones to guide nestmates to the best feeding sites on the tree.

Japanese Giant Silkmoth

A large reddish-brown moth with prominent eyespots on all four wings. It is endemic to Japan and closely related to the European Emperor Moth.

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Did You Know?

It is considered a harbinger of spring in rural Japan, where it is called 'kusu-san'.