 Larva green with a yellow stripe on back and at the sides, brownish head and brownish legs; at first glassy, transparent, later yellow on the back.Emerges in April and feeds until June on "Rumex" and "Solidago".Pupa rounded, smooth, similar to a small bean, brownish, with dark markings; on the thorax a dark dorsal longitudinal stripe, which is continued on the abdomen by a row of impressed dots.