I can see you!
Your ancestors spent millennia perfecting your camouflage for life in the vegetation and then you wander across open ground! Luckily you only met a benevolent old blipper!
This little beauty is the caterpillar of the Emperor Moth Saturnia pavonia, thus named by Linnaeus, in1758. This spectacular moth is Britain's only resident member of the Saturniidae family. It is reasonably common over much of Britain, occupying moorland and open country.
The fully grown caterpillars are green with black hoops containing yellow, red or pink wart-like spots, and feed on moorland plants such as heather (Calluna) and bramble (Rubus).