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Female Leucrocuta hebe (Little Yellow Quill) Mayfly Dun Pictures

Classification
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Heptageniidae (March Browns, Cahills, Quill Gordons)
» Genus Leucrocuta
» Species hebe (Little Yellow Quill)
 I found this dun on the same piece of stream as a similar spinner, probably of the same species.

This mayfly was collected from the northeastern United States on September 19th, 2006 and added to Troutnut.com on October 4th, 2006.

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Recent Discussions of this Dun

Looks like Leucrocuta
Posted by GONZO on Oct 6, 2006
Haven't checked any keys to verify, but most of the little late-season Cahill-looking duns are Leucrocuta. If I had to guess at the species, I'd say hebe (Little Yellow Quill). It is probably the most common L. spp. in the East and has a long hatching period that extends well into the fall.

I would also agree that the spinner you photographed is the same species.
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