What is it

Discussion in 'Fly Fishing Entomology' started by Rick Sharp, Aug 17, 2013.

  1. Rick Sharp

    Rick Sharp Member

    Found along the Columbia river by Irrigon Or.

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  2. Jim Ficklin

    Jim Ficklin Genuine Montana Fossil

    Looks like a Golden Mayfly to me.
     
  3. Taxon

    Taxon Moderator Staff Member

    Hi Rick-

    It's a Hexagenia male imago (spinner), most often simply referred to by fly fishers as a Hex.
     
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  4. Rick Sharp

    Rick Sharp Member

    Those were everywhere and about a half inch long

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  5. Taxon

    Taxon Moderator Staff Member

    Hi Rick,
    The only Hexagenia species found in the PNW is Hexagenia limbaba, whose body length (as measured from front of head to end of abdomen, excluding length of tails) can range from ~12 mm to ~37 mm. However, the ones I have encountered in WA were toward the high end of that length range.