Quill Gordon

Epeorus pluralis

Hook size: #12-14
On the water: Apr 10 – May 20
Peak: Apr 20 – May 10
Time of day: Afternoon

This is the first real mayfly of the year, as soon as water touches 10°C — but it's also one of the rare ones that never truly emerges at the surface. The Quill Gordon splits its nymphal shuck underwater, and the dun you see floating has already finished the hard part before it ever breaks the film.

Telling it apart

Only two tails — most of our other mayflies carry three, which identifies the genus Epeorus at a glance.
Slate-grey to rust-brown body, smoke-grey wings held upright, size 12–14.
A broad, flattened nymph clinging to rock in clean, fast riffles — a true "clinger."
The floating dun carries no trailing nymphal shuck — it has already shed it before ever reaching the surface.

Easily confused with

The Hendrickson (Ephemerella subvaria), which comes off around the same time and size, but carries three tails and a browner-olive body without the slate cast. The Blue Quill (Paraleptophlebia adoptiva), smaller (16–18) and in slower water, sometimes overlaps the tail end of its emergence.

An emergence underwater

In most of our mayflies, the nymph swims or drifts up to the film and it's right there, at the surface, that it splits its skin to become a dun — that slow, vulnerable transition is exactly what a trout watches for. The genus Epeorus does it differently: the nymph splits its shuck directly underwater, often close to the bottom, and what rises toward the surface is already a winged dun, trapped in a gas bubble under its old cuticle.

That changes everything for an angler. The vulnerable moment isn't at the film anymore — it's underwater, during the rise. A nymph or emerger fished on a rising drift near bottom imitates what's actually happening far better than a dry fly perfectly timed at the surface.

A nymph built for fast water

The nymph's flattened, widened body is no accident — it's a classic "clinger" adaptation that cuts the current's grip and lets it hold tight to rock in the fastest, most oxygenated riffles on the river, exactly where most other nymphs couldn't hang on.

That means looking for the Quill Gordon in hard-bottomed riffles and the fast-water heads of pools, never in calm bays or silty flats. If the current isn't strong enough to threaten your footing, there's a good chance the nymph isn't there either.

The first hatch, on still-cold water

As soon as the water hits roughly 10°C, usually mid-April in southern Québec, the Quill Gordon becomes the year's first real dry-fly window. The hatch concentrates in the afternoon, once the water has had a few hours of sun to warm it slightly — a trout that just spent the winter feeding on the bottom doesn't pass that up.

Because the emergence already happened underwater, a lot of anglers fish a dry "too early" in the sequence and wonder why takes stay scarce despite visible bugs on top. Try a nymph or emerger through the first half hour of a visible hatch, then move up to a dry once duns are genuinely piling up.

Fishing it, stage by stage

Nymph / emerger

Just before and during the hatch, in the afternoon.

On a rising drift near bottom, in steady-current riffles — that's where the real emergence happens.

Tie onPheasant Tail Nymph Bead Head Hare's Ear

Dun

In the afternoon, once bugs are visibly piling up.

A grey dry dead-drifted, once trout have clearly switched their attention to the top.

Tie onParachute Adams

Every other insect worth knowing, month by month: See the full hatch chart