Dark Brown Duns

Mayflies

Caddisflies

Stoneflies

Scientific Names

Match	Scientific Name
	Ameletus cooki
	Diphetor hageni

Like most common names, "Dark Brown Dun" can refer to more than one taxon. For more detail click through to the scientific names.

Mayfly Species Ameletus cooki

These are sometimes called Dark Brown Duns.

Mayfly Species Diphetor hageni

These are very rarely called Dark Brown Duns.

This is one of the most important species of the Baetidae family. It is distributed across the country, but most of its fame comes from excellent hatches in the West where it is probably the most populous member of the Baetidae family.

Diphetor hageni has two former names used in angling literature, Baetis parvus in the West and Baetis divinctus in the East.

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