This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
Martinlf on Aug 3, 2014August 3rd, 2014, 9:24 am EDT
John, as far as I know bacillus thuringiensis is one of the best controls for caterpillars. It's a targeted biological control, and thus less of a risk for many other creatures.
Thanks for the info guys. My boys have come up with a great control method as well. They pull the caterpillars off the tree gathering as many as they can and then feed the neighbors laying hens. No pesticides or chemicals needed (although the "worms" do not like Sevin.
"old habits are hard to kill once you have gray in your beard" -Old Red Barn