Spring Pygmy Firefly vs Cottonwood Borer

Side-by-side species comparison

Attribute Spring Pygmy Firefly Cottonwood Borer
Scientific Name Pleotomus pallens Plectrodera scalator
Order Coleoptera Coleoptera
Family Lampyridae Cerambycidae
Size 5-8 mm 25-40 mm
Habitat Underground Rivers & Streams
Diet Omnivores Root Feeders
Regions Eastern North America Central and eastern United States
Conservation Not Evaluated Least Concern

Spring Pygmy Firefly

A tiny, rarely seen firefly of the eastern United States with a very short adult life span. Males produce faint, sporadic greenish flashes close to the ground.

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Did You Know?

Females are wingless and larviform, and were once classified as a completely separate species from the males.

Cottonwood Borer

A large longhorn beetle with bold black and white patterning and long antennae. Its larvae bore into the roots and lower trunks of cottonwood and willow trees.

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Did You Know?

When handled, it produces a loud squeaking sound by rubbing parts of its thorax together.