Grasshopper

At around lunchtime was in my backyard soaking up the sun when I noticed a movement on my willow sapling. On closer inspection I found it to be a lovely green grasshopper. Its the first one Ive ever found in my backyard so I was quite pleased. About an hour later there was no sign of it, just hope one of my cats didnt eat it. Still havent found out what the mystery fly was, the nearest I could find to it on the net was some kind of north american wasp. Long way from home if it was one of those.