Gnawbeetle Swarms

These flying, hand-sized insects feature a shimmering carapace, usually green or blue, as well as a pair of powerful mandibles capable of tearing into flesh, wood, and even soft stone. Gnawbeetles are only dangerous near the time of their birth when they emerge as a swarm from the carcass of a construct. At this time, the gnawbeetles are filled with the mystical energies of the construct which causes them to be extremely aggressive. Within a day, this swarm will have dispersed, with each beetle going its separate way, looking for a safe place to burrow into to lay its eggs. Gnawbeetles are the result of gnawgrubs transforming 

2 swarms a pack. Made of metal and supplied unpainted.