But look at this picture, below, of the moth's head seen from the front. Aha! All is explained.
Another interesting newcomer for the year was the Waved Umber below. I was looking at it with Penny and the granddaughter and the latter immediately got the point of the former's exclamation: "What brilliant camouflage for hiding on a tree trunk." So it is, a very fine combination of appropriate colours and a measure of optical 'dazzle' to mask the insect's shape.
Meanwhile the school for Emperor Moth caterpillars is developing fast and I plan to release the little chaps in the wild tomorrow. The pictures below show interestingly different rates of development, considering that these are brothers and sisters from the same clutch. Here for a start are three separate instars, or stages of development, munching hawthorn together:
Then three sturdy chaps and their less-developed sibling:
My Mum used to keep us going on boring walks in childhood by giving us young hawthorn leaves to nibble and telling us that country folk knew the snack as 'bread and cheese'. There never seemed to be the remotest similarity to us, but the leaves had a slightly refreshing, salady sort of effect.