Christmas Island Blue Crab Fly vs Big Dipper Firefly

Side-by-side species comparison

Attribute Christmas Island Blue Crab Fly Big Dipper Firefly
Scientific Name Paramyia nitens Photinus consimilis
Order Diptera Coleoptera
Family Phoridae Lampyridae
Size 2-4 mm 8-12 mm
Habitat Forests Woodlands
Diet Omnivores Omnivores
Regions Christmas Island North America
Conservation Not Evaluated Least Concern

Christmas Island Blue Crab Fly

A tiny fly found on Christmas Island in the Indian Ocean associated with red crab migrations. It lays eggs on injured or dead crabs.

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Did You Know?

During the annual red crab migration, these flies congregate in vast swarms along forest trails.

Big Dipper Firefly

A common North American firefly that produces a slow, arching flash resembling the Big Dipper constellation pattern. It is active in early summer evenings.

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Did You Know?

Each species of Photinus has evolved its own unique flash pattern to avoid mating with the wrong species.