Larvae are grubs, stout, white to tan in color and up to 7 mm long with a brown head and cervical shield.
Pupae construct earthen cells in the soil.
Larvae have 3 pairs of thoracic legs plus fleshy appendages bearing a few apical hairs on the abdominal segments. Adult Larva Distribution Eastern US from Maine to Florida, west to southern Wisconsin, eastern Iowa and Kansas, south through Texas and from Oklahoma westward to southern California. Life Cycle as Related to Rice Legumes such as lespediza and soybeans are primary hosts of the grape colaspis adults. Multiple generations are common in legumes and the last generation of larvae overwinters deep in the soil. In the spring larvae move upwards in the soil seeking plants.