Sawfly larvae (Nematis pavidus) on a willow tree, a gardener's nightmare !
Canon 100mm 2.8 USM, bracket mounted diffused flash.
They put their tails up when they are disturbed in an effort to warn off predators ( didn't frighten me at all )

IMAGE LINK: http://img.photobucket.com …IMG_8201s_zpsf5ginqjp.jpg





