What is the Difference between a.brocklehursti & a.geniculata??

I have both in my collection and I wondered if there was any difference between them??

This is my a.geniculata Sorry the photo is blurred she just wouldnt stay still!!



and this is my a.brocklehursti



both bought from a reputable source, looking at them side by side they seems to be no difference at all,

I was hoping somebody could tell me what the difference is between them