Winter Stones

Taxon

Moderator
Staff member
#2
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.
 
#4
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.
 
#9
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
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
 

Taxon

Moderator
Staff member
#11
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.
 

Taxon

Moderator
Staff member
#14
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
 

Beachmen

Active Member
#15
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.
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.