I found this. Beautiful insect! The article says the one pictured is found in Europa which, as I rememer it, is a satellite of Jupiter. Wow!

I think they must mean 'Europe' in American terminology. :-)

Here is a link that might be useful: Saga hellenica

Yes, this is the family I was talking about. still, what I saw stood on two legs only - whicj means it is not this one. thanks for your time.

I wonder if you didn't see what we call a praying mantis - they look superficially like the grasshoppers that you call "saga", and usually stand on their rear legs with the grasping forelegs held up. See the link below for pictures of the common European species of mantis. Hope this helps -
Tucker

Here is a link that might be useful: European Mantis

Tucker, I think you've probably nailed it. With that decription of its behavior, the insect is probably one of the mantids.