Puss Moth Cerura vinula
An ideal beginner's species and an old favourite for the connoisseur. Larvae change frequently and become one of the strangest creatures. Curious forked tail with long red flagellae when disturbed. Foodplants are Poplars and Willows.
The caterpillar spins a concrete-hard cocoon of chewed bark, mixed into its own silk, producing a cocoon that is so camouflaged that it is very hard to see - see the picture - VERY hard to see!