Re: Giant Black Stoneflies
I was out trying to fool some New Brunswick brookies with some streamers today, with little success. So I decided to turn over some rocks and have a look. To my surprise, I found the Largest Stonefly I had ever seen!!!
What a wonderful photo. Looks like you have a pretty darned realistic imitation too, just not quite large enough. In any event, that would be a Salmonfly, family Pternarcidae, perhaps the American Salmonfly, Pteronarcys dorsata. They attain a maximum nymphal body length (excluding antennae and tails) of 2 1/2".
Created: 05/16/2006 Last modified: 08/25/2006 www.FlyfishingEntomology.com