False Blister Beetle vs Island Marble Butterfly

Side-by-side species comparison

Attribute False Blister Beetle Island Marble Butterfly
Scientific Name Ischnomera cyanea Euchloe ausonides insulanus
Order Coleoptera Lepidoptera
Family Oedemeridae Pieridae
Size 8-12 mm 3-4 cm wingspan
Habitat Beaches & Coastal Beaches & Coastal
Diet Wood Feeders Herbivores
Regions Europe United States
Conservation Least Concern Endangered

False Blister Beetle

A metallic blue beetle that develops inside rotting wood near coastal areas.

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Did You Know?

Unlike true blister beetles it does not produce cantharidin.

Island Marble Butterfly

A small white butterfly with green marbled undersides found only on San Juan Island, Washington. It was presumed extinct for 90 years before rediscovery in 1998.

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Did You Know?

When rediscovered, it was initially mistaken for the common Sara orangetip butterfly.