For all of the lurkers and new enthusiasts trying to glean information....
I never found really good pictures of this when I was researching my
infestation. Here are a couple for you to reference. I beleive these are
Boisduval scale .

http://home.roadrunner.com/~katkom/scale1.jpg
http://home.roadrunner.com/~katkom/scale2.jpg

from South Dakota State University
http://nathist.sdstate.edu/orchids/pests/scales.htm

http://nathist.sdstate.edu/orchids/p...ale%20male.jpg
http://nathist.sdstate.edu/orchids/p...0on%20leaf.jpg
http://nathist.sdstate.edu/orchids/p...0in%20axil.jpg