Winter Stones

Discussion in 'Fly Fishing Entomology' started by Patrick Gould, Jan 27, 2013.

  1. Patrick Gould

    Patrick Gould Active Member

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    I came across lots of these guys while cross country skiing along Iron Creek today.
    ImageUploadedByTapatalk1359328231.479741.jpg
     
  2. Taxon

    Taxon Moderator Staff Member

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    Hi Patrick-

    Here is a list of the (26) WA species of Slender Winter Snowflies:

    Capniidae Bolshecapnia sasquatchi Sasquatch Snowfly
    Capniidae Capnia confusa Widespread Snowfly
    Capniidae Capnia elongata Cascades Snowfly
    Capniidae Capnia excavata Saddleback Snowfly
    Capniidae Capnia gracilaria Slender Snowfly
    Capniidae Capnia licina Bent Snowfly
    Capniidae Capnia melia Northwest Snowfly
    Capniidae Capnia nana Dwarf Snowfly
    Capniidae Capnia promota Pacific Snowfly
    Capniidae Capnia sextuberculata Six-knobbed Snowfly
    Capniidae Capnura elevata Thicklimb Snowfly
    Capniidae Capnura venosa Falcate Snowfly
    Capniidae Eucapnopsis brevicauda Shorttailed Snowfly
    Capniidae Isocapnia abbreviata Shortlimb Snowfly
    Capniidae Isocapnia agassizi Agassiz Snowfly
    Capniidae Isocapnia grandis Giant Snowfly
    Capniidae Isocapnia palousa
    Capniidae Isocapnia rickeri
    Capniidae Isocapnia spenceri Chilliwack Snowfly
    Capniidae Isocapnia vedderensis Vedder Snowfly
    Capniidae Mesocapnia autumna Autumn Snowfly
    Capniidae Mesocapnia oenone Wine Snowfly
    Capniidae Mesocapnia porrecta Stretched Snowfly
    Capniidae Mesocapnia projecta Spined Snowfly
    Capniidae Paracapnia ensicala Sword Snowfly
    Capniidae Utacapnia imbera Scappoose Snowfly

    However, determining exactly which one it is would require microscopic examination of male genitalia.
     
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  3. Pat Lat

    Pat Lat Mad Flyentist

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    holy crap, I guess Ill have to put more little black stoneflies in my winter box
     
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  4. Patrick Gould

    Patrick Gould Active Member

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    Thanks Taxon. I guess I should have kept one.

    Pat - I was thinking that a very small ant pattern would work well. If a guy timed it right he could get some dry fly action on the upper SF Sno.
     
  5. zen leecher aka bill w

    zen leecher aka bill w born to work, forced to fish

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    Patrick, what length would you estimate the stonefly at? I tied up some little green ones based on what I'd see on streams in your area in the late summer.
     
  6. Patrick Gould

    Patrick Gould Active Member

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    They were about 1/4"-5/16".
     
  7. zen leecher aka bill w

    zen leecher aka bill w born to work, forced to fish

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    Them's little!!
     
  8. kelvin

    kelvin Active Member

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    size 20 any one?
     
  9. tkww

    tkww Member

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    That's a small stone! The ones I usually see are about a standard #14 shank in length. Of course I only see them steelheading and never see any rises--not to mention it'd be closed for trout anyway.
     
  10. jessejames

    jessejames Flyslinger

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    Taxon When I saw these on the North Fork of the Coeur d' Alene river I did my feeble research and found Nemoura winter stones. I have since then been calling them that. From what I see in your post that is probably wrong?
    Do we have nemoura in WA are they more brown than black?
    The winter stone imitation that I tie is a size 16 with coarse dubbing picked out (looks leggy) two wraps of #16 black hackle and a white wing laid flat over the body, I use that real thin foam packing/wrapping sheet for the wing. When the fly gets wet the only thing that floats is the wing. It works well.
    jesse
     
  11. Taxon

    Taxon Moderator Staff Member

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    Hi Jesse-

    Excellent question. The Forestflies of family Nemouridae are known as Spring Stoneflies and start emerging starting in March, whereas the Snowflies of family Capniidae are known as Slender Winter Stoneflies and their emergence begins in December. Please see Stonefly Taxonomic Structure. Flyfishers sometimes refer to Nemourids as Mottled Browns. However, some fit that description better than others. Here is a list of the Nemourids found in WA:

    Nemouridae Lednia tumana Mist Forestfly
    Nemouridae Malenka bifurcata No Common Name
    Nemouridae Malenka californica California Forestfly
    Nemouridae Malenka cornuta No Common Name
    Nemouridae Malenka flexura Twisted Forestfly
    Nemouridae Malenka perplexa Coast Forestfly
    Nemouridae Malenka tina Tiny Forestfly
    Nemouridae Malenka wenatchee
    Nemouridae Ostrocerca dimicki Hooked Forestfly
    Nemouridae Ostrocerca foersteri Cascades Forestfly
    Nemouridae Podmosta decepta Least Forestfly
    Nemouridae Podmosta delicatula Delicate Forestfly
    Nemouridae Podmosta obscura Brown-veined Forestfly
    Nemouridae Prostoia besametsa Banded Forestfly
    Nemouridae Soyedina interrupta Broken Forestfly
    Nemouridae Soyedina producta Knobbed Forestfly
    Nemouridae Visoka cataractae Cataract Forestfly
    Nemouridae Zapada cinctipes Common Forestfly
    Nemouridae Zapada columbiana Columbian Forestfly
    Nemouridae Zapada cordillera Cordilleran Forestfly
    Nemouridae Zapada frigida Frigid Forestfly
    Nemouridae Zapada haysi Intermountain Forestfly
    Nemouridae Zapada oregonensis Oregon Forestfly

    Hope this helps.
     
  12. jessejames

    jessejames Flyslinger

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    Thanks Roger. Great information as usual.
    jesse
     
  13. Derek Young

    Derek Young 2011 Orvis Endorsed Fly Fishing Guide Of The Year

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    Today on the Yakima, a nice hatch near Cle Elum. IMAG0926_BURST002.jpg
     
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  14. Taxon

    Taxon Moderator Staff Member

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    Hi Derek,

    I believe it to be of genus Zapada. Here are the WA species:

    Nemouridae Zapada cinctipes Common Forestfly
    Nemouridae Zapada columbiana Columbian Forestfly
    Nemouridae Zapada cordillera Cordilleran Forestfly
    Nemouridae Zapada frigida Frigid Forestfly
    Nemouridae Zapada haysi Intermountain Forestfly
    Nemouridae Zapada oregonensis Oregon Forestfly
     
  15. Beachmen

    Beachmen Active Member

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    one thing that i do is when i am gathering insects is put take a few viles with me and when i get home preserve them in everclear. i have a golden stone from when i was 8 that looks like i got it yesterday.
     
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