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Mahogany Dun Mayfly

Isonychia bicolor


Isonychia bicolor is only abundant on certain rivers, even in ideal regions. One river can be fantastic while the next drainage over shows no sign of Isonychia.


Thanks luteum stenonema for the ID

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1 Comment

luteum stenonema
luteum stenonema 8 years ago

The very large hind wing, the white rear and middle legs suggest
(Isonychia bicolor)

Christine Y.
Spotted by
Christine Y.

Connecticut, USA

Spotted on Sep 8, 2014
Submitted on Sep 8, 2014

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