Dark Cahill Dry

The Light Cahill is a timeless classic that stands shoulder-to-shoulder with the Adams as one of the most enduring mayfly imitations in fly fishing. Originally tied by Daniel Cahill in the late 1800s to match light-colored summer mayflies, the pattern has evolved into a generalist fly that imitates various Stenonema and Ephemerella duns. Crafted with a finely dubbed body, upright divided wings, and a balanced dry fly hackle, the Light Cahill's elegant profile captures the soft translucence and posture of freshly emerged duns. Its realism and consistency have made it a go-to pattern for anglers seeking success during late spring and summer hatches.

Pair with a Spinner: If refusals begin, consider trailing a spent-wing Light Cahill spinner pattern behind your dry fly for selective fish during the hatch’s tapering phase.