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Mayfly nymph

Order: Ephemeroptera


These nymphs are about 1 cm in length. Dark to black coloring. Found in clean streams and used as a bioindicator.


Aquatic invertebrate. Usually faster flowing high oxygenated water.


Found in a small stream near school.

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Spotted by

Rockland, Idaho, USA

Spotted on Apr 16, 2015
Submitted on Apr 29, 2015

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