4th May. Standing under a pine tree, got caught in a small rainstorm of tiny white grubs (each one only about half a centimetre long). I ducked back to stop them getting into my hair. As soon as they hit the ground they tried to wriggle away to find a place to burrow down. Not many managed it: the ground was populated by ants and most of the grubs fell prey to them. The struggle lasted quite some while, but the ants seemed to win. These are sawfly larvae, from the xyelidae family. Their host plants are conifers.