"Giant Salmon Fly"
Pteronarcys californica
giant stonefly nymph

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This species make up the most numerous
on major western rivers.  Often mistakenly called
"helgrammites".  Up to 2".  3 year life cycle.  Hatch
late April to early summer.  Occupy swift rivers at
moderate altitudes.  Chocolate brown with deep
orange leg joints & underbody.

Other giant stoneflies: Giant Black Stonefly;
Great Brown Stonefly; Great Stonefly;
Golden Stonefly

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