Japanese Horntail vs Citrus Longhorn

Side-by-side species comparison

Attribute	Japanese Horntail	Citrus Longhorn
Scientific Name	Eriotremex formosanus	Anoplophora chinensis
Order	Hymenoptera	Coleoptera
Family	Siricidae	Cerambycidae
Size	20-35 mm	21-37mm
Habitat	Woodlands	Woodlands
Diet	Wood Feeders	Wood Feeders
Regions	East Asia, Taiwan, introduced to southeastern United States	Asia, Europe
Conservation	Least Concern	Least Concern

Japanese Horntail

A large wood wasp with a robust reddish-brown body and dark wings. Native to East Asia, it attacks stressed and recently felled hardwood trees.

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This species was first detected in North America in 1974 and is one of the few tropical siricid wood wasps to establish invasive populations.

A glossy black beetle with white spots on its elytra and distinctively banded blue-black antennae. It is an invasive pest of hardwood trees.

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A single larva can completely ring-bark and kill a healthy mature tree from the inside.