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Valanga nigricornis
Grasshopper ~12 cm
It is most likely called the short horned grasshopper because of the short horns along the back of his legs.
What do you mean by "masure2, you mean "measure" and you mean why it is called short-horned, although they antennae seems to be quite long? I don't know, but compared with katydids (which were from a completely different family) they are indeed short. Short-horned Grasshopper is the common english name for this one.