Dark Hendrickson Mayfly vs Small Minnow Mayfly

Side-by-side species comparison

Attribute Dark Hendrickson Mayfly Small Minnow Mayfly
Scientific Name Leptophlebia cupida Callibaetis ferrugineus
Order Ephemeroptera Ephemeroptera
Family Leptophlebiidae Baetidae
Size 8-12 mm 7-11 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Detritivores Detritivores
Regions North America North America
Conservation Least Concern Least Concern

Dark Hendrickson Mayfly

A dark-bodied spring mayfly important to trout anglers in the Northeast. Nymphs inhabit leaf packs and debris in slow to moderate stream sections.

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Did You Know?

It often emerges alongside Ephemerella subvaria, and the two species together form the famed Hendrickson hatch.

Small Minnow Mayfly

A mottled brown mayfly common in still waters across North America. Nymphs are excellent swimmers that mimic small minnows.

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Did You Know?

It can produce up to three generations per year in warm climates.