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Photo#1367359
Mayfly - Siphlonurus

Mayfly - Siphlonurus
Indian Road area, Los Padres National Forest, Monterey County, California, USA
May 6, 2017
Size: ~1cm
Found in side pool off flowing creek with gravel substrate in mixed oak conifer habitat

Moved
Moved from Mayflies.

Siphlonurus
The nymph in your picture appears to be a Siphlonurus species. I don't know which, there are no keys for western species.

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