Spiny Crawler Mayfly vs Drake Mackerel Mayfly

Side-by-side species comparison

Attribute Spiny Crawler Mayfly Drake Mackerel Mayfly
Scientific Name Ephemerella subvaria Ephemera glaucops
Order Ephemeroptera Ephemeroptera
Family Ephemerellidae Ephemeridae
Size 8-12 mm 15-20 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Detritivores Detritivores
Regions North America Europe
Conservation Least Concern Least Concern

Spiny Crawler Mayfly

A mayfly important to fly anglers and known as the Hendrickson in fishing culture.

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Did You Know?

Its springtime hatch is one of the most anticipated events in fly fishing.

Drake Mackerel Mayfly

A large European burrowing mayfly with distinctive dark markings on its wings. It emerges in synchronous swarms during warm summer evenings.

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Did You Know?

Swarms of this mayfly dancing over European rivers at sunset have inspired poets and naturalists for centuries.