This month’s fly was chosen by HTU member Ed Smith. The “Iso” phenomenon lasts from late May through October in our part of the country. You might not see duns on the water because the hatches are generally sporadic, but trout will often respond to an Isonychia dry fly at any time of the day, even in broad daylight. The parachute version is a particularly good searching fly to drum up willing fish in riffles, runs, and smooth water over selective trout. Tie up ten and bring them to the next chapter meeting.