Hans Stephenson of Dakota Angler & Outfitter demonstrates how to tie a Split Case PMD Nymph. An excellent nymph from Solitude Fly that is great for imitating emerging mayfly nymphs. Tied as shown this fly imitates a Pale Morning Dun (PMD) nymph. Change the body color to a dark olive for a Blue-Winged Olive (BWO)….