Thanks Jason, a brilliant first lesson. Now - instead of thick mud - it's more like soup.
Lori - your Muscid fly is a perfect example of what I'm looking for. I was looking through the spider section, and noticed that I thought I knew some of the spiders in one id, but couldn't confirm them because the answer was in Latin.
Jason - may I give you a shout next time i get confused........urrrm, that might keep you busy