Asian Horntail vs Spangle Gall Wasp

Side-by-side species comparison

Attribute Asian Horntail Spangle Gall Wasp
Scientific Name Urocerus antennatus Neuroterus quercusbaccarum
Order Hymenoptera Hymenoptera
Family Siricidae Cynipidae
Size 20-35 mm 1.5–2.5 mm
Habitat Forests Woodlands
Diet Wood Feeders Herbivores
Regions East Asia, Japan, Russian Far East Europe
Conservation Least Concern Not Evaluated

Asian Horntail

A large wood wasp from East Asia with a dark body and distinctively long antennae. It attacks various coniferous trees, particularly larches and spruces.

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Did You Know?

This species is considered a potential quarantine pest due to the risk of introduction to new regions through untreated conifer timber imports.

Spangle Gall Wasp

A tiny gall wasp that produces flat, disc-shaped spangle galls on the undersides of oak leaves. It alternates between two distinct gall forms across generations.

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Did You Know?

A single oak leaf may carry over a hundred spangle galls, yet the tree suffers minimal harm.