by M. Kathy Raines Many of us have fond childhood memories of playing with roly-poly bugs (Armadillidium vulgare)—also called pill bugs, woodlice, sow bugs or doodlebugs—those tiny, tough, multi-legged creatures that roll up into a ball.  My three-year-old grandson snatches up the little black pills—troubled when they do not promptly curl up—then nudges them to…