Scotch Argus vs Summer Fishfly

Side-by-side species comparison

Attribute Scotch Argus Summer Fishfly
Scientific Name Erebia aethiops Chauliodes pectinicornis
Order Lepidoptera Megaloptera
Family Nymphalidae Corydalidae
Size 40-48 mm wingspan 25-40 mm
Habitat Woodlands Rivers & Streams
Diet Omnivores Omnivores
Regions Europe, temperate Asia North America
Conservation Least Concern Least Concern

Scotch Argus

A dark brown butterfly with russet-orange bands containing eyespots, found in northern grasslands and light woodland. It flies in a bouncing manner close to the ground.

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Did You Know?

In Britain, it is confined to Scotland and a single colony in the Lake District surviving since the last ice age.

Summer Fishfly

A medium-sized fishfly emerging in summer with distinctive dark-veined wings and feathery antennae. Larvae develop in muddy stream bottoms.

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Did You Know?

Unlike dobsonfly larvae that prefer fast-flowing water, summer fishfly larvae thrive in slow muddy pools and swamps.