Green cloverleaf worm

Adult - About 5 to 10 mm long, this snout beetle is covered with small gray, brown, and yellow scales which make it appear mottled and indistinctly striped.
Egg - The oval, 1-mm-long egg is pale yellow when first laid but gradually darkens to black.
Larva - The young, legless larva is green. Reaching a mature length of 12 to 13 mm, the grub is greenish or yellowish with a white or pink line down the center of the back and a dark line along each side.
Pupa - The yellow-green pupa is 5.5 to 7 mm long and has a dark green abdomen. It is enclosed by a straw colored cocoon 9 to 10 mm in length.