Put some meat on the table with this mayfly nymph that replicates an emergent Baetis nymph just before breaking through it's shuck. Our version of the split case emerger, this fly is a great choice before imminent hatches, as well as, during the hatch.  

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