Green Diablo - Green crab fly

ok I'm looking for this pattern:

Alan Caolo's Green Diablo, an impressionistic green crab imitation  haven't tied one yet

I've read that it is derived from a wooly buggerand often used for sight fishing in estuaries around grass banks.

another picture is:

and here is one discussion about the fly:

The best fly for this application, in my mind, is Dave Skok’s Diablo crab. Like any good fly it can be tied in a variety of colors and with different tails (bunny strip, splayed hackle, polar bear, rubber legs, etc.), but the basic tie involves making a body of webby hackle palmered over chenille on the body and trimmed on the bottom. When stripped, this hackle will be pushed back along the hook shank, slimming the profile of the fly. If left to fall slowly or slid along the bottom, it will maintain a wide, crustacean-like profile. The key is that this fly adapts to how it is fished, not the other way around. And in the case of permit, a fish that can be found in countless different attitudes, it pays to have a fly that will easily adapt.

Read more:

http://www.flyfisherman.com/editorial/permit-munchie-diable-crab-style/152683