Insects are more rarely portayed in street art than birds or mammals. Here are a few I have come across.
The green grasshopper (for all I know, a cricket or cicada) was part of the window display in a shop in the French Atlantic resort of St Jean de Luz.
The wrought iron doorstep bannister, with dragonflies among bullrushes, was in the Exe estuary village of Topsham. And the dragonfly doorknocker is at Newbridge.