A terrestrial, tied #16–20, a summer pattern. It is tied against 1 named insect in this book — August–September.
A terrestrial tied on a standard dry-fly hook in sizes 16–20 with rust 8/0 thread, the body cinnamon-brown dubbing or foam in two segments, wings of white or light dun poly laid flat and swept back, and a sparse brown hackle. The two-segment body and the flat wing are what the fly is: an alate ant on the water, the winged form of Formicidae, which the pattern is tied against for August–September at water temperatures of 58–78°F. The fall comes on one or two humid afternoons in late August, and when it does every fish in the river eats them and nothing else will do. A few carried through summer covers it. The fish are trout, and the fly is fished dead drift as a dry, small and low in the film the way the naturals lie once their wings have wetted. Outside those afternoons it has no other job, which is why it is carried in small numbers rather than large.
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 | Standard dry-fly hook, sizes 16–20 |
|---|---|
| Thread | Rust 8/0 |
| Body | Cinnamon-brown dubbing or foam, two segments |
| Wings | White or light dun poly, flat and swept back |
| Hackle | Brown, sparse |
One or two humid afternoons in late August, and every fish in the river eats them. Carry it and be ready.
A summer pattern. The insects it matches are active august–september, in water from 58°F to 78°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.