Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Sorry about my last post. I couldn't figure out how to add a picture attachment. The original photograph is at flyfishing entemology.com. the pictue is titled caddis home.
Roger:you are the man!
I will go out on a limb...