I tie a few hair winged duns but don’t tie them as representations of any particular Dun or Spinner (imago) stage of any specific insect. The Hair Winged Royal Coachman is an excellent example of a hair winged dun. It evolved from origins in England of the 1800’s.
When a caddis fly hatches it rises to the surface of the water, shedding its nest and shuck as it breaks through the surface tension of the water so as to reveal its wings. Caddis flies often use surface movement caused by wind and currents to assist in this process.
Whilst I don’t think either the Original or any of the variants represents any of the naturals that I’ve seen it is a good buggy general purpose hopper pattern. If you experiment with bodies of different colored chenille, yarns and tinsel matched with different colored deer hair you can come up with combinations to suit most small hoppers.
The Cock-Y-Bonddu is a Welsh beetle pattern which is equally at home on Australian trout waters. The original was tied with flat silver tinsel wound around the hook shank just behind the body. This little bit of flash isn’t intended to represent a tail its more likely that it was included to imitate the beetle wing parts that often trail behind a beetle like a tail when it gets trapped in the water mid flight.
The term ‘spinner’ refers to that stage in a Dun’s life cycle when it has moved off the water or, vegetation etc. after drying its wings. The adult or imago of all Mayflies, Caddis flies and Midges can technically be regarded as spinners. The following Spinner is a generic representation for members of the “Leptophlebiidae” family of Mayflies and the various Highland Duns & Spinners, which are members of the “Oniscigastridae” family. Hatches generally occurs between the months of October and March. Carry black, brown, red and blue damsel versions.
The Adams Irresistible is just one representation of a Baetis Dun. It floats like a cork and what’s more fish accept it as a variety of food items. In smaller sizes it is an excellent Baetis Dun imitation and an excellent fly in still water particularly when Snow Flake Caddis are about. In larger sizes it is an excellent fly for fast water or as a top fly in dry / nymph combination. Change the material colours to tie flies representing Baetis Duns in your target fishery. I carry Adams, black, brown and olive versions in a couple of sizes.
I use this fly to represent mayflies that are members of the Leptophlebiidae classification of mayflies which includes the Highland Dun and Olive Dun and also the Kosciuszko Dun which is a member of the Coloburiscidae classification of the Mayfly family.
The red tag is as relevant today as when it was first invented some 140 years ago. It is perhaps the quintessential beetle imitation and is popular worldwide.
If you have a look at Caenis Duns there are fundamentals of shape that are common across the species and captured by this pattern. The tail consists of only three filaments; the body starts thin and is then cigar shaped with 9 distinct segments. They have 6 legs and wings faces back at about a 60 degree angle. The common colours are grey and brown and when they are hatching the vision is of very small single winged sailing boats on the water.
The Iron Blue Dun is a standard hackled classic that has a permanent home in most UK dry fly-fishers fly boxes. Its also considered a staple fly in many Australian and New Zealand dry fly boxes. It is representative of the male dun and the hatches occur throughout the season.
