Night beetles

Night beetles are 6 legged, black bugs with pincers. They look like a cross between a cave spider and a silver fish. Theses bugs exclusively spawn underground in dark areas. These bugs can hide in stone blocks. These bugs will break any light source placed by the player. It only attacks players if it is dark, its attacks only deal half a heart of damage but they also grant blindness. Night beetles will often spawn in groups of 5 or more. If there is light and there is a player around it will retreat into the stone.