Snowborn Stonefly vs Forestfly

Side-by-side species comparison

Attribute Snowborn Stonefly Forestfly
Scientific Name Capnia atra Nemoura cambrica
Order Plecoptera Plecoptera
Family Capniidae Nemouridae
Size 4-7 mm 6-9 mm
Habitat Rivers & Streams Forests
Diet Detritivores Detritivores
Regions North America Europe
Conservation Least Concern Least Concern

Snowborn Stonefly

A tiny black stonefly that emerges during the coldest months in northern North America. Adults are frequently observed walking on snow.

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Did You Know?

It is active at temperatures near freezing, when virtually all other insects are dormant.

Forestfly

A small brown stonefly associated with forested Welsh and British streams. Nymphs have distinctive cervical gills and feed on leaf detritus.

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Did You Know?

The species was first described from specimens collected in Wales, giving it the name cambrica.