Small Brown Forestfly vs Great Purple Hairstreak

Side-by-side species comparison

Attribute Small Brown Forestfly Great Purple Hairstreak
Scientific Name Nemoura avicularis Atlides halesus
Order Plecoptera Lepidoptera
Family Nemouridae Lycaenidae
Size 5-8 mm 32-50 mm wingspan
Habitat Woodlands Woodlands
Diet Detritivores Nectar Feeders
Regions Europe Southern United States from California to the Atlantic coast
Conservation Least Concern Least Concern

Small Brown Forestfly

A small brown stonefly of European woodland streams that emerges in spring. Nymphs are detritivores feeding on submerged leaf litter.

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Did You Know?

Adults fold their wings flat over the body like a fan, unlike most stoneflies that fold wings along the sides.

Great Purple Hairstreak

The largest hairstreak in North America with brilliant iridescent blue upperside wings and a bright red-orange abdomen. Its underside is dark with metallic blue and red spots near the tails.

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Did You Know?

Its caterpillars feed only on mistletoe, and females seek out this parasitic plant high in oak canopies to lay their eggs.