We found these larvae in hazel nuts from last autumn. The weevils lay their eggs in the growing nut, then normally after a few weeks when they have eaten the nut kernel the larvae burrow out (see the exit hole in the nut shell), and relocate to the ground beneath the tree where they remain as pupae until the next spring when they emerge as beetles. In several cases there were live larvae in this batch of dried out nuts; their normal lifecycle presumably interrupted by our harvesting & storing the nuts.