I have several black, hairy caterpillars feeding on the leaves of mind-your-own-business (soleirolia). Does anyone have any idea as to what sort of butterfly they will become?
Thanks for that Cetti. If the weather improves I will try to take a photo. I have looked on the website and they could be Red Admirals, as we have had some in the garden. I never realised that there were so many caterpillars!