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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Adirman
Adirman's profile picture
Monticello, NY

Posts: 479
Adirman on Sep 6, 2010September 6th, 2010, 12:33 am EDT
Hey! I was on a small stream yesterday and observed a bunch of these bugs, had long legs and looked like size was about #10-12, skittering acroos the surface of the water. Fish basically ignored them from what I could see and they stayed mostly around the edges. are these water boatmen?

Thanks,
Adirman
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Sep 6, 2010September 6th, 2010, 4:54 am EDT
Hello Adirman,

No, those aren't water boatmen. They are water skaters. Both are aquatic true bugs, but in different families. To more easily visualize this, you might want to access Waterbug Taxonomic Structure
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Adirman
Adirman's profile picture
Monticello, NY

Posts: 479
Adirman on Sep 7, 2010September 7th, 2010, 11:51 am EDT
Taxon;

thanks for your post. another question perhaps you can answer;are these water skaters important to trout or not so much? Seemed to me they were ignoring them the other day! I also saw this several yrs ago on the mongaup river a trib of the maiin stem delaware.

Thanks,

Adirman
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Sep 7, 2010September 7th, 2010, 12:03 pm EDT
Adirman-

Yes, trout generally ignore water skaters. The most common reason given is that they are foul-tasting. However, another reason may be that water skaters are so adept at avoiding a trout's rise that trout learn not to waste their time chasing them.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

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