Claret Dun Mayfly vs Giant Michigan Mayfly

Side-by-side species comparison

Attribute Claret Dun Mayfly Giant Michigan Mayfly
Scientific Name Leptophlebia vespertina Hexagenia bilineata
Order Ephemeroptera Ephemeroptera
Family Leptophlebiidae Ephemeridae
Size 8-12 mm 18-28 mm
Habitat Ponds & Lakes Rivers & Streams
Diet Detritivores Detritivores
Regions Europe North America
Conservation Least Concern Least Concern

Claret Dun Mayfly

A dark-winged mayfly that emerges in the evening over still and slow-moving waters.

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Did You Know?

It is a key food source for brown trout during spring evening rises.

Giant Michigan Mayfly

A large burrowing mayfly with two dark stripes on its thorax. Nymphs dig into soft clay and silt bottoms of large rivers.

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Did You Know?

Mass emergences along the Great Lakes have caused road closures due to the slippery accumulation of millions of dead adults.