Round-necked Longhorn vs Spring Pygmy Firefly

Side-by-side species comparison

Attribute Round-necked Longhorn Spring Pygmy Firefly
Scientific Name Neoclytus acuminatus Pleotomus pallens
Order Coleoptera Coleoptera
Family Cerambycidae Lampyridae
Size 8-18 mm 5-8 mm
Habitat Woodlands Underground
Diet Wood Feeders Omnivores
Regions Eastern North America; invasive in Europe Eastern North America
Conservation Least Concern Not Evaluated

Round-necked Longhorn

A reddish-brown cerambycid with narrow yellowish crossbands on the elytra, native to eastern North America but now invasive in parts of Europe. It breeds in freshly dead hardwood and is frequently found in stored firewood.

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Did You Know?

This beetle has spread to Europe through the timber trade and is now established in parts of Italy and the Balkans.

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.