Synchronous Firefly vs Siamese Stag Beetle

Side-by-side species comparison

Attribute Synchronous Firefly Siamese Stag Beetle
Scientific Name Photinus carolinus Hexarthrius parryi
Order Coleoptera Coleoptera
Family Lampyridae Lucanidae
Size 8-12 mm 45-90 mm
Habitat Mountains Mountains
Diet Omnivores Sap Feeders
Regions North America Thailand, Malaysia, Indonesia, India
Conservation Least Concern Not Evaluated

Synchronous Firefly

One of the few firefly species in North America that synchronizes its flashing patterns. Thousands flash in unison during mating season in the Great Smoky Mountains.

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Did You Know?

Their synchronized light displays in the Great Smoky Mountains attract thousands of visitors each year through a lottery system.

Siamese Stag Beetle

A large stag beetle with impressive curved mandibles and a dark brown to black body. Males use their oversized jaws in territorial combat.

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Did You Know?

Males can lift opponents twice their own weight with their massive mandibles during fights.