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Mayfly Species Eurylophella lutulenta (Chocolate Dun)

Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
» Genus Eurylophella (Chocolate Duns)
» Species lutulenta (Chocolate Dun)
Common Name
MatchCommon Name
***Chocolate Dun
The only account of this species I've found in angling literature is in the Leonards' Mayflies of Michigan Trout Streams. They remark that it is the size of Ephemerella subvaria, much larger than any Eurylophella nymphs I've collected, and its color is a "rather bright yellowish-brown."  

Where & When

Regions: East, Midwest
Time Of Year (?): Late May through early June
Preferred Waters: Lakes and large rivers

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