What place has maternal foresight here?
Abandoned no matter where in the heap of seeds, the eggs are always in place, as it is left to the grub to search and to find the points of invasion.
In five days at most the egg is hatched.

A little white creature with a red-brown head emerges.

It is a mere speck of a creature, just visible to the naked eye.

Its body is thickened forward, to give more strength to its implements--its mandibles--which have to perforate the hard substance of the dry bean, which is as tough as wood.

The larvae of the Buprestis and the Capricornis, which burrow in the trunks of trees, are similarly shaped.