Spiny Crawler Mayfly vs Small Spurwing Mayfly

Side-by-side species comparison

Attribute Spiny Crawler Mayfly Small Spurwing Mayfly
Scientific Name Ephemerella subvaria Centroptilum luteolum
Order Ephemeroptera Ephemeroptera
Family Ephemerellidae Baetidae
Size 8-12 mm 5-8 mm
Habitat Rivers & Streams Rivers & Streams
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.

Small Spurwing Mayfly

A tiny, elegant mayfly with a distinctive spur on its hindwing. It is widespread in European streams and rivers with good water quality.

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Did You Know?

Unlike most mayflies that swarm over water, small spurwings often emerge individually and drift with the current.