A dry fly, tied #10–12, a summer pattern. It is tied against 1 named insect in this book — June.
The spent stage of a large mayfly, tied on a 2X long dry-fly hook in sizes 10 and 12 with tan 6/0 thread. Three moose hairs are splayed for the tail, the body is rusty-tan dubbing, and the wings are white poly yarn tied spent and lying flat over the body. There is no hackle at all, or at most a turn clipped flat underneath, so the fly lies in the surface the way a dead spinner does. It is tied against the Brown Drake, Ephemera simulans, of June, in water from 55 to 65 degrees, and it follows the dun after dark. The presentation is a downstream slack-line drift, dead in the film, aimed at a rise heard rather than seen, since the white wings are the only part of it visible and often not even that. It is carried in summer and fished for trout.
A drawing, not a photograph, and not traced from one. Its proportions were read off 5 independent reference photographs of the pattern and written down as 5 measured characteristics — wing angle, tail length against the shank, how far a hackle fibre reaches — every one of which had to hold across more than one of them before it could be drawn. What survives across many photographs of a fly is the fly.
Each of these is the same hatch record the app's own panel reads, so a pattern recommended on a river card in the app is recommended for one of the insects below.
In tying order. This dressing is the standard one — these patterns have been in the publicrecord for decades — and materials substitute freely: the proportions and the silhouette are the pattern, not the brand of dubbing.
| Hook | 2X long dry-fly hook, sizes 10–12 |
|---|---|
| Thread | Tan 6/0 |
| Tail | Three moose hairs, splayed |
| Body | Rusty-tan dubbing |
| Wings | White poly yarn, spent, flat over the body |
| Hackle | None, or clipped underneath |
After the dun, in the dark. Fish it on a downstream slack-line drift over a rise you heard rather than saw.
A summer pattern. The insects it matches are active june, in water from 55°F to 65°F.
Rivers with a page here that sit in the regions where the insects this pattern imitates are recorded. It is a claim about coverage, not a report of a fish caught.
Same type of fly, or tied for the same insects.