The name says it all. It looks like a psycho, fishes like a psycho and IS a psycho. The multi-hued abdomen and thorax help make this an overperformer on bright days, but don't be afraid to throw it on overcast days as well. The pearlescent finish makes it shiny in the sun and dull under the clouds, giving you a true all season baetis that doubles as an attractor. 

Search terms: Baetis/BWO nymph, emerger (Juju Baetis, Barr's Emerger, RS2, WD-40, Split Case).