Thomas Ames, Jr. describes fishing this imitation to make it appear
naturalistic in his new book "Hatch Guide to New England
This fly should be part of your assortment when fishing the hatches of
the Spotted and Cinnamon Sedges. When pulled under water, this
pattern simulates a diving caddis, the hairy body and legs trap
oxygen bubbles much the same as the natural female does when swimming
under water to lay her eggs. The trapped air bubbles help float her back to the surface. The fisherman that duplicates
in his presentation should have success.