Stick grasshopper

This is what I have found:
The spotting is most likely Acrida Acuminata, Acrida Truxalis or Acrida Truxaloides and they are found in South Africa. These can look very similar to eachother and according to one source: "I venture no further than family unless we can see hind wing patterns (mottled black in Truxalis) and the presence (Truxalis and Truxaloides) or absence (Acrida) of stridulatory serrations on the inner hind femora.
It is a dense row of short ridges or riffles of the cuticle, situated on the inside of the hind femur. By moving this "file" of ridges very fast over a "plectrum" (single strong ridge) on the forewing (in rest), the hopper makes its sound (= stridulation). The microscopic details of the file and the plectrum are of great importance in the taxonomy of all singing Orthoptera, even if their call is not melodious, It is, in my opinion, completely impossible to see these structures on any standard photo of a grasshopper or cricket. The structures are small, and, as said, on the inside of the hind leg."

I do not know how reliable this persons analyze is, but for now I will leave this Stick grasshopper with the Acrida sp. (http://www.ispot.org.za/species_dictionary/Acrida)