potato bug A terrestrial crustacean that is a member of the suborder Oniscidea. It has a rigid, segmented, calcareous exoskeleton and fourteen jointed limbs. It is usually found in damp, dark places, such as under rocks and logs.
potato bug (Leptinotarsa decemlineata) Yellow and black striped beetle from the family of the Chrysomelidae which originates from America and feeds upon parts of the potato plant.
