I have 2 desert species, both Aphonopelma, but one is an unnamed Sp.  “Davis Mountain Rusty”.  I am wondering if anyone is familiar with this species?  My Sling is about 1/2” and behaves like my 1/4” Chalcodes sling.  They look identical, but I have been told that they are different.  Any info would be great!

Here is the only photo I can get (taken with my webcam):