Spangle Gall Wasp vs Split-banded Owlfly

Side-by-side species comparison

Attribute Spangle Gall Wasp Split-banded Owlfly
Scientific Name Neuroterus quercusbaccarum Ascaloptynx appendiculatus
Order Hymenoptera Neuroptera
Family Cynipidae Ascalaphidae
Size 1.5–2.5 mm 42-55 mm wingspan
Habitat Woodlands Woodlands
Diet Herbivores Predators
Regions Europe Eastern United States
Conservation Not Evaluated Least Concern

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.

Split-banded Owlfly

A striking North American owlfly with a bold dark band across each forewing. Inhabits dry grasslands and open woodland in the eastern states.

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Did You Know?

Males defend aerial territories and engage in dramatic dogfight-like chases with rival males.