Giant Silk Moth vs Simplon Beetle

Side-by-side species comparison

Attribute Giant Silk Moth Simplon Beetle
Scientific Name Hyalophora euryalus Nebria cordicollis
Order Lepidoptera Coleoptera
Family Saturniidae Carabidae
Size 90-130 mm 9-12 mm
Habitat Farmland Mountains
Diet Omnivores Omnivores
Regions Western North America, from British Columbia to Baja California Western Alps, Switzerland, Italy
Conservation Least Concern Least Concern

Giant Silk Moth

A large western North American silk moth with reddish-brown wings featuring bold white crescent markings and a red-and-white banded body. It is the Pacific coast counterpart of the cecropia moth.

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Did You Know?

Hyalophora euryalus can hybridize with the cecropia moth where their ranges overlap, producing fertile offspring in a zone of intergradation.

Simplon Beetle

A heart-shaped-thorax ground beetle native to high passes in the western Alps. It inhabits cold, exposed rocky habitats.

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Did You Know?

Named for the distinctive heart shape of its pronotum.