Rolled-Wing Stonefly vs Large Oak Cynipid

Side-by-side species comparison

Attribute Rolled-Wing Stonefly Large Oak Cynipid
Scientific Name Leuctra geniculata Cynips quercusfolii
Order Plecoptera Hymenoptera
Family Leuctridae Cynipidae
Size 7-12 mm 2.5–4 mm
Habitat Rivers & Streams Woodlands
Diet Herbivores Herbivores
Regions Europe Europe
Conservation Least Concern Not Evaluated

Rolled-Wing Stonefly

A small autumn-emerging stonefly with wings rolled around the body. It is one of the few stoneflies that hatches in late summer and autumn.

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Did You Know?

This stonefly has an unusual life cycle, emerging as an adult in autumn rather than the spring emergence typical of most stonefly species.

Large Oak Cynipid

A gall wasp that induces cherry-sized galls on the undersides of oak leaves. The galls turn from green to red as they mature in autumn.

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Did You Know?

The colorful galls were historically known as 'oak cherries' and were sometimes mistaken for real fruit by children.