Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large Brown Trout that only touch streamers for the rest of the year.

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Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph Pictures

This mature nymph is associated with the dun from the same location and date posted on this hatch page. Size 10mm.

This mayfly was collected from the Fall River in California on November 12th, 2011 and added to Troutnut.com by Entoman on December 15th, 2011.

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Taxonomy

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)

» Genus Ephemerella (Hendricksons, Sulphurs, PMDs)

» Species excrucians (Pale Morning Dun)

Hex MayfliesHexagenia limbata

Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph Pictures

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Taxonomy

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Hex Mayflies
Hexagenia limbata