They are small, short beetles.
Head is small and the snout is blunt.
Antenna is serrate.
Hind femur is thick.
Elytra are short and do not cover the abdomen fully.
Eggs are whitish, scale like and glued to the pods or seeds by a glutinous secretion. Grubs
feed exclusively on seed legumes. Pupation occurs within the seed. Adult emerges by
cutting a circular exit hole. Development is similar to hypermetamorphosis. Pulse beetle
:
Callosobruchus
chinensis . It is a serious pest on stored pulses.