larry wrote:
If that caterpillar had a raised section where the black goes across it's back then it might be a Grey Dagger Moth lava though the head is listed as Black ?
The rest looks very much the same.
I have a book here 'The Colour identification guide to caterpillers of The British Isles' and that was the closest from the photos I could see. Try Google images with the name and see what you think. I haven't see one like that before.
I took that photo at the beginning of July and I took several photos, so I have looked at the others and there is one where I must have disturbed it, as it was tucking it's head under and you can clearly see the raised bit on it's back.
Also, there were lots of them on my new Amelanchier Lamarckii tree which has berries on and I read that Grey Dagger caterpillars like fruit trees.
As for not having a black head - I think this could be an earlier instar, not completely mature yet. The younger ones usually don't have the white stripe down the side. I have tried to look for a white stripe on the other photos but can't see one, so that maybe why the head is a different colour.
The photo
HERE shows an earlier instar without the white stripe and that seems to have the same colour head as mine.
Thank you for helping me to identify that.