A nymph, tied #16–22, a winter pattern. It is tied against 2 named insects in this book — all year.
Two materials and nothing else: copper wire wound the full length of the shank, and a thorax of peacock herl or black dubbing. It is tied on a 2X heavy nymph hook in sizes 16 through 22 with black 14/0 thread, and the wire body is both the shape and the ballast, so the fly sinks fast for its size — which is the point of it, on a hook this small. The wound wire also gives a segmented, slightly translucent body that the herl breaks up at the front. It imitates the midge, Chironomidae, present all year and active from 33 to 75 degrees. It is carried in winter and fished for trout, getting down through cold water quickly enough to be in front of fish holding deep, in conditions where lighter dressings never reach them. The dressing is simple enough that a box of them costs little more than the wire.
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 4 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 heavy nymph hook, sizes 16–22 |
|---|---|
| Thread | Black 14/0 |
| Body | Copper wire, wound the full shank |
| Thorax | Peacock herl or black dubbing |
Wire and herl. It sinks fast for its size and takes fish in winter where nothing else will.
A winter pattern. The insects it matches are active all year, in water from 33°F to 75°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.