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Mayfly Species Rhithrogena futilis (Western Gordon Quill)

Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Heptageniidae (March Browns, Cahills, Quill Gordons)
» Genus Rhithrogena
» Species futilis (Western Gordon Quill)
Common Names
This is a large but uncommon species of Rhithrogena.  

Where & When

Region: West
Time Of Year (?): Late May through July
The best populations of Rhithrogena futilis are in the Northwest, but they are found elsewhere in the Rockies.

Hatching Behavior

Time Of Day (?): Morning

Spinner Behavior

Swisher and Richards mention in Selective Trout that the duns of this species are not important but the spinners can be.

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Last update July 19th, 2007.
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