Surveyor, JayL: take a look at "flymphs" or fuzzy nymphs, which are
basically soft hackle wets with dubbing looped bodies.
Basically, form a dubbing loop with your thread, apply some wax, and
then touch it up and down. Spin the loop and then wrap it like you
would anything else.
You'll get really gnarly bodies, and you can pretty much make your
dubbing out of anything, or everything, on your desk or scrapes. I've
seen some really nice CDC dubbing loops lately, and all the ones you
see there are blended in a coffee grinder from rabbit skin, and various
shades of "plastic canvas yarn" (basically antron, as far as I can tell).
The thread body will show through the fur really well, you can see one
of those is tied over green thread, the rest are over orange.
Grouse, partridge, hen or you can see there's a guinea hen in there,
too. All works.
I've also done touch dubbing over wire, which works pretty well, but
they definatly get wispy fast.
For comparision sake, there's a regular spider amongst them. He has a
tiny bit of touch dubbing for a collar, but the body is just regular
Persall's.