Tanbark Borer vs Giant Robber Firefly

Side-by-side species comparison

Attribute Tanbark Borer Giant Robber Firefly
Scientific Name Phymatodes testaceus Photuris lucicrescens
Order Coleoptera Coleoptera
Family Cerambycidae Lampyridae
Size 8-17 mm 12-16 mm
Habitat Woodlands Meadows
Diet Wood Feeders Predators
Regions Europe, North Africa, introduced to North America Eastern North America
Conservation Least Concern Not Evaluated

Tanbark Borer

A small, highly variable cerambycid ranging from pale yellow to dark brown or violet. It breeds under the bark of recently dead oaks across Europe and North America. Adults are nocturnal and come freely to lights.

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Did You Know?

Color variation in this species is so extreme that over a dozen color forms have been named, all belonging to one species.

Giant Robber Firefly

A large predatory firefly from eastern North America that mimics the flash patterns of Photinus species. Females lure Photinus males to consume them.

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Did You Know?

Females can switch between multiple flash patterns, mimicking different prey species on a single evening.