Deleatidium Pre-emerger |Originator : Marc
Griffiths | Size: 18
Trout often lock onto pre-emergers during moderate to good mayfly hatches, completely ignoring the duns. Trout feeding on pre-emergers exhibit a bulging rise
form with the tail and dorsal fin breaking the surface. This pattern is designed to imitate pre-emergent Deleatidium nymphs and can be fished in the surface film, if you grease
the fly, and just below the surface if you don't. This pattern is deadly during mayfly hatches, on the Mataura
River for example.