Mark Melton
Life of the Party
These are in the Russian River and Mill Creek pretty much year round. They usually prefer a clean bottom of sand and small cobble with some algae growth. The nymphs are between 5.5 - 6.5 mm in length excluding the cerci and antennae.

Female nymph

Female nymph

Molting female nymph

Female nymph

Male nymph

Male nymph

Female nymph

Female nymph

Molting female nymph

Female nymph

Male nymph

Male nymph