Pennsylvania Firefly vs Queen of Spain Fritillary

Side-by-side species comparison

Attribute Pennsylvania Firefly Queen of Spain Fritillary
Scientific Name Photuris pennsylvanica Issoria lathonia
Order Coleoptera Lepidoptera
Family Lampyridae Nymphalidae
Size 10-15 mm 38-50 mm wingspan
Habitat Farmland Farmland
Diet Predators Omnivores
Regions Eastern North America from Canada to Georgia Europe, Africa, temperate Asia
Conservation Least Concern Least Concern

Pennsylvania Firefly

A common firefly of the eastern United States that produces a green-yellow bioluminescent flash. Adults are soft-bodied with a dark pronotum edged in pink.

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Did You Know?

Females mimic the flash patterns of other firefly species to lure males as prey, earning them the name femme fatale fireflies.

Queen of Spain Fritillary

A powerful-flying fritillary with large, brilliant silver spots covering the underside of its hindwings. It is a restless migrant that can appear far outside its usual range.

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Did You Know?

Its massive silver underwing spots are thought to startle predators by flashing in flight like mirrors.