Forcipules — Robert S. Wilson

Ever since the local factory was destroyed by the meteorites, Edgar's been down on his luck and drunk. Marilyn wishes he'd just quit moping and look for a job. But that rock he brought home from the debris, it's got a secret. A creepy crawly secret with 15 pairs of legs.

As the town is taken over by something not of this world, Marilyn is the only one in her right mind to witness it. Can she do anything to stop them?

***This short story is an ode to the pulpy science fiction/horror stories of old. Not for the squeamish when it comes to bugs, particularly centipedes.***