White Satin Moth stowaways

This little feller is an over-wintering caterpillar of the White Satin Moth (Leucoma salicis). I found a couple of these amongst a batch of braconid parasitoid pupal cases collected from the poplar trees in Queen's Gardens, Hull. I have never seen the adult of this species even though it seems to be expanding its range across the county.

I am grateful to Dean's Daily Diary for alerting me to the fact that Colt's-foot (Tussilago farfara)is beginning to flower.
This was one of several found at Timble Ings yesterday. I had a quick look for the feeding signs of Triangle Plume larvae but these are probably still in hibernation.