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Photo#901209
unknown 22

unknown 22
Napa, California, USA
March 14, 2014
These are the first swimmers of the spring in Huichica Creek

Moved

Moved
Moved from ID Request.

Fly pupa?
They look like pupae of Culicomorpha. Many are active swimmers.

 
Culicomorpha
Thanks for your help. At this stage look much bigger than a mosquito or midge will become.

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