scale figures

Have you tried Google?  Google > Images > 1/16th scale figures.  http://www.google.com/search?num=10&hl=en&safe=active&site=imghp&tbm=isch&source=hp&biw=1280&bih=827&q=1%2F16th+scale+figures&oq=1%2F16th+scale+figures&gs_l=img.12..0i24.2902.12418.0.14212.20.14.0.6.6.0.344.1685.0j9j0j1.10.0...0.0...1ac.1.zS9vwCO37BM

Keep refining your search until you find something you like.

It is an odd size. I may wind up having to go with a 1/16 or 1/32. Size isnt real critical. I need something to pair with an ant, as in the movie THEM!

It doesnt have to be a caveman. Just a figure with ragged, tattered, or primitive clothes.

I just mainly need a web site/catalog where I can see pictures of the figures so I can find something that would fit or could be relatively easy to modify.

You can find 1/16th scale figures almost anywhere, but caveman figures might be difficult to find.  You might want to consider converting other figure into cavemen.

1/22 is an odd size.  Have you tried model railroad figures?