Caterpillar of the Red Admiral (Vanessa Atalanta)
Or the 'Red Admirable', it's former common name, as I prefer to call it.
Its larva is almost as inpressive as the butterfly itself, one of which I photographed just a few days ago on a chilly December day.
However, here's the ever hungry caterpillar to remind us of mid-summer.

The Red Admiral is a well-known colourful butterfly, found in temperate Europe, Asia and North America. The Red Admiral has a 45–50 mm wing span. The species is resident only in warmer areas, but migrates north in spring, and sometimes again in autumn.
Similar species: Moths And Butterflies
By Philip Booker
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Uploaded Dec 22, 2021. Captured Jun 20, 2021 18:32 in 33 Crespin Way, Brighton BN1 7FG, UK.