Came across a delightful thread on Tom Sutcliffe's South African fly fishing site, that has an interesting spider pattern from Fred Steynberg.
ED HERBST'S ZAKHAMER EMERGER
I have been playing around with it and it looks like it has some excellent triggers for fishing close to the edges of streams.
Hook: Tiemco 2487BL (caddis emerger) #16
Thread Uni 8/0 black, with some black synthetic dubbing under the foam
Abd/thorax - closed cell foam black
Post: white antron
top hackle (halo): natural dark blue dun (Whiting Hebert-Miner)
Bottom wide hackle: English partridge
Views shown from angler's and fish's perspectives. Think I could slim down the partridge but will know better after field testing in the Sierras first week in June. Comments and criticisms welcomed.