Diawl bach
{{Short description|Fly pattern}}
{{Infobox artificial fly
|name = >
|image =
|caption =
|type= Wet fly
|imitates =
|creator = British
|created =
|othernames =
|variations =
|sizes=
|hooktype= Fulling Mill Competition Heavyweight Black size 10
|thread = Uni 8/0 black thread
|tail = Dyed black hen fibres
|body = Black peacock herl
|wing =
|ribbing = Red UTC Tinsel with Opal Mirage back
|hackle =
|tag =
|butt =
|throat = Dyed black hen fibres
|cheek =Jungle Cock
|shoulder=
|topping =
|head =
|thorax =
|legs =
|bead =
|use1 =
|use2 =
|ref=
}}
Meaning "little devil", the diawl bach is a popular Welsh fly pattern used in British still waters, and an appropriate lure to use when the fish are feeding on midge pupae. The dressing is simple: size 8 to 14 hook, brown thread, a few barbs of brown hackle for the tail, copper wire, a few barbs of peacock herl for the body, and tying thread for the head.{{cite web|url=http://flyandlure.org/articles/fly_tying/7_diawl_bach_patterns_for_stillwater_rainbow_trout|archive-url=https://web.archive.org/web/20171218111715/http://flyandlure.org/articles/fly_tying/7_diawl_bach_patterns_for_stillwater_rainbow_trout|url-status=usurped|archive-date=December 18, 2017|website=Fly and Lure|title=7 Diawl back patterns for stillwater rainbow trout|access-date=February 26, 2021}}
Variations
Variations include jungle cock substitute cheeks, red head, hare's ear for the body and flash materials on the back.
Fishing approach
Fish as one of a team of three flies drawn slowly on a dry line with a long leader. A particularly effective method is to let the wind push the floating fly line around and look for a twitch in the line as indication that a fish has taken the fly. It can be effective during a midge (chironomid) hatch, and a flashy version is worth using towards the autumn as a pinfry imitator.{{cn|date=May 2020}}{{or|date=May 2020}}