I found this bug today at work in a supermarket. It was green but slightly translucent around the abdomen. It didn't have wings but it has very long antennae and what appears to be a spike/stinger at the back. I say spike/stinger as I thought it was just a spike but after I picked it up (and trapped it inside a bottle tag using a produce bag) it sort of flexed it up and down as if it was trying to sting (like a scorpion would). It didn't seem to have any form of biting facilities but I am convinced it was a stinger. The picture is a bit pants due to what it was trapped in. I'm really intrigued as to what bug this as I've never seen one before and can't seem to find it anywhere online!
Welcome to NaturePlus.
It is an oak bush cricket, Meconema thalassinum
The yellowish stripe along the back distinguishes it from the great green bush cricket, Tettigonia viridissima, which is also larger
It is a female. The 'stinger' is her ovipositor.