Promethea Moth vs Geranium Bronze

Side-by-side species comparison

Attribute Promethea Moth Geranium Bronze
Scientific Name Callosamia promethea Cacyreus marshalli
Order Lepidoptera Lepidoptera
Family Saturniidae Lycaenidae
Size Wingspan 75-95mm 18-23 mm wingspan
Habitat Woodlands Underground
Diet Herbivores Omnivores
Regions North America Native to South Africa; invasive in Mediterranean Europe
Conservation Least Concern Least Concern

Promethea Moth

A large silk moth with strong sexual dimorphism. Males are dark with tan margins while females are reddish-brown with lighter markings.

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Did You Know?

Males fly during the afternoon which is unusual for silk moths and they are sometimes mistaken for dark-colored swallowtail butterflies.

Geranium Bronze

A small dull brown butterfly with a distinctive white fringe and thin tail that has become a major pest of cultivated geraniums in Europe. Its larvae bore into geranium buds and stems.

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Did You Know?

Since its accidental introduction to Majorca in 1990, it has spread across most of southern Europe.