Spring Stonefly vs Yellow Sally

Side-by-side species comparison

Attribute Spring Stonefly Yellow Sally
Scientific Name Amphinemura sulcicollis Isoperla fulva
Order Plecoptera Plecoptera
Family Nemouridae Perlodidae
Size 6-9 mm 8-12 mm
Habitat Rivers & Streams Rivers & Streams
Diet Detritivores Omnivores
Regions Europe Europe
Conservation Least Concern Least Concern

Spring Stonefly

A small dark stonefly that emerges in early spring in European streams. Nymphs are shredders of decomposing leaf litter in headwaters.

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Did You Know?

Adults are among the first insects to appear each spring, sometimes emerging while snow still covers the banks.

Yellow Sally

A bright yellow stonefly common in European upland streams. Nymphs are omnivorous, feeding on both algae and small invertebrates.

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Did You Know?

The vivid yellow color serves no known warning function and fades quickly in preserved specimens.