Posted on 9 August 201731 July 2017 by David Cinnabar moth caterpillars eating groundsel Two cinnabar moth caterpillars eating avidly at a groundsel plant. Groundsel is related to the ragworts. Like them it has noxious alkaloids to discourage predators, recycled by the moths to repel its own would-be predators. Post navigationPrevious post: Artichoke floweringNext post: Bell-flowered clematis flowers