For a long time on my web site I mistakenly identified this caterpillar as a Brown Tail moth until somebody kindly sent me a e-mail saying they like my site but it is a
Knot Grass moth. Which is a common mistake with this moth caterpillar. Found and photographed on hawthorn, they will also feed on Bramble, Dock and other herbaceous plants. The moth is mainly black with shades of grey.
Wingspan 30-35 mm.