But when it does, this is the type of damage caused in potatoes. Damaged areas may be cut away and the potatoes still used, but wireworm damaged potatoes do not store well. Bean damage by wireworm Wireworms also damage young bean seedlings causing death of the plant. When this is widespread in a garden, the beans will need to be replanted. Earwig and damage Earwigs cause little damage to beans and usually do not require control.
Damage is shown here.
Mexican bean beetle Mexican bean beetles are a serious pest in Idaho and must be kept from commercial growing areas. Adult beetles are shown in the upper left and lower left. They are pale yellow with 8 black spots on each wing cover. Eggs are laid on the leaf and soon hatch into the spiny yellow larvae seen in the lower right. Larval feeding damage can be seen near the center in the upper right.