I can relate on you about being tormented by insects, I had to go to the hospital during a summer camp when I was in the Cub Scouts. There were clouds of black flies harassing us and I ended up vomiting and my ears and neck started to swell. A head net is a very important piece of equipment if you venture in the wild. If you don't have one, at least try to improvise something like from a scarf or something.
Frankie