Sylvan Katydid

thank you everyone for the interesting links. Wow! Lots of info out there if you know how to look it seems

In the meanwhile I suggest the following ID:
Sylvan Katydid as common name and Pseudophyllinae as scientific name.

Just some working documents for illustrating and making some further research (I need to close my windows and do not want to loose all my links after doing quite an intense re-search...).
http://orthoptera.speciesfile.org/Common...
http://orthoptera.speciesfile.org/Common...
http://www.gorongosa.org/blog/bush-diari...
http://indiabiodiversity.org/observation...
http://orthoptera.speciesfile.org/Common...
http://orthoptera.speciesfile.org/Common...
http://www.biodiversitylibrary.org/item/...
http://www.afripics.com/home/products/re...
http://newswatch.nationalgeographic.com/...

thanks Chief RedEarth for the India spotting - v cool

thanks everyone. I'm going to look them up.

Mastigaphoides haffneri is an Australasian species and most probably not found in Zambia. I am not sure if an ID is possible without the native specimen.

Leaf-mimic Katydid, Tettigoniidae, Pseudophyllinae, (Pseudophyllini?). Sometimes also called Sylvan Katydid. I only know some Mustius sp.
http://orthoptera.speciesfile.org/Common...