Late Into Hibernation

Larvae are going into hibernation rather late this autumn, as happened last year when most larvae stayed on leaves until the third week of November. 

Both in the wild and in captivity half the larvae are still on leaves.  Here's one in hibernation in Savernake today, 1m from where it had been feeding (this one may move again...) -

And here's another from today, who is still on a green leaf (on a late leaf-fall tree) and is only about half coloured-up -

The latest I've recorded a larva still on a leaf in the wild is Nov 24th...