a prime trigger for fish accepting a nymph when looking at a fly from a distance checking for «triggers» in the silhouette. I believe fish do the same. Tiny details which set an edible item apart from a piece of debris floating in the water column. A big part of this is the correct presentation of the fly, the appropriate size, shape and very very important ….. LEGS
The silhouette of insect legs is no exception. They are also very characteristic. Even from alrger distance these tiny legs can be identified as such. This, in my mind is prime trigger for fish too.
The fly shown is an upside-down tied variation of the famous pattern by Oliver Edwards. It fishes very well and is a lot of fun to tie. You need a pheasant tail feather. Take a few fibers off the the main stem by ripping them in a 90 degrees angle from the main stem. The fiber roots make nice little feet.
The problem is how to angle the fibers sort of 90 degrees from the body of the fly. This is solved by «pulling» the fiber into a softer material. The fiber is held by the tying thread in the softer material. The remaining fiber is clipped off.
So this «soft material» is the basis for you fly. You can use all sorts of materials for that task. One very common solution is latex strips in 3mm width offered by various manufacturers. Make sure it is not too thin. I am very happy with a product called “Nymphskin” sold by Virtual Nymph Products in England. That material is also used by Oliver Edwards for his original design.
The following pictures take you through the whole process of tying a Hydropsyche larva. These bugs live in abundance under rocks in streams. I highly recommend you examine the river bed and see what you can find.
USD Hydropsyche Larva
Why upside down?
Well, you can use a bigger hook and the pattern is easier to tie, I think. You can of course use the same type of hook in regular fashion and have the legs on the same side as the hook point, meaning under the hook eye. For the fishing it makes no and if only minimal difference.
Materials: Grubs Hooks (Partridge CZ or CZF), lead foil or wire, a filoplume (small feather found under the main feather on a partridge), ostrich feather, pheasant tail, latex strip 3mm, marker pens, UV cured resin. two bobbin holders, Dyneema thread white & regular thread black.
Note: If you do not have UV curing resin you can use normal head cement, but be aware that this takes much longer to dry.
Update: we made a set of videos you find here: