Adults are about 1/8 inch long and dark brown; the front of the thorax has numerous indentations and short spines; the head is bent downward. Larvae are pale white with a dark head.
Development. Eggs are laid in cracks and crevices in bamboo; hatching is in about six days.
The larval period is about 41 days; development from egg to adult is completed in 31 to 85 days; adults live 28 to 115 days.
Habits. Infestations can occur in material made of bamboo, including furniture;
stored food, flour, and spices also can be infested, but this is rare. The holes in bamboo may be the only evidence, as the beetles are rarely seen.