I have been photographing flies for my web-site (I got a 'photo booth as a gift over Christmas) and included a couple of flymphs that I use. I hope they mee the forum standard.
1. BWO

Hook: Tiemco 103BL (I use 15,17n & 19 for this pattern)
Thread: UNi Thread 8/0 - Yellow
Tail: Blue dun genetic hen
Body: Australian possum - natural (this material is fantastic as it is both hollow and attracts air bubbles.)
Hackle: Blue dun genetic hen
2. Iron Blue

Hook: Tiemco 103BL size 19
Thread: Uni Thread 8/0 - Red
Body: Australian possum
Hackle: Genetic light blue dun hen
Now you will notice that there is no rib in these two flies. The reason for this is the way that I the the hackle in. Let me try and explain:
1. Dub the body fur onto the thread as per normal. I don't use anything different.
2. Before tying the dubbing in, prepare the hackle by holding the tip and gently stroking the fibres downward
3. Now start dubbing the body and stop once you get to thew thorax point or where you want the hackle to cease.
4. Pick up the hackle and tie it in at the tip (with the shiny side up) AS YOU KEEP dubbing.
5. Once you have dubbed the body and thorax, wind the hackle forward and tie off. I normally do an extra turn at the head.