If a population of larder beetles is found, what does their continued presence reliably indicate?

Answer

That a suitable, often renewable, food source persists nearby

The consensus is that without a food source, larder beetles will not survive; therefore, if the insect population continues to be found, it reliably indicates that a food source is still accessible somewhere in the vicinity.

If a population of larder beetles is found, what does their continued presence reliably indicate?
insectbeetlelifespansurvivallarder beetle