These tiny insects belong to the same family as cicadas.
They have a broad head and a wedge-shaped body, and range in colour from bright green, through yellow to brown. Their clear wings fold past their bodies (like a cicada). They have very powerful back legs like a grasshoppers and can jump a long way when disturbed. They can also run sideways.
The nymphs are similar to the adult but are smaller and don’t have wings.
Adult size: 3mm