Eyestinger Swarms are hordes of flies that have been mutated by the Nurgle Gellerpox plague, which has greatly increased their size and aggressiveness. They are known to fight beside any creature that has also been infected by the Gellerpox plague.
Eyestinger Swarms originate from chaos-infected corpses imbued with a tiny portion of warp energy. Fast creatures with sharp proboscis', Eyestinger swarms are extremely difficult targets. Their bite is lethal, able to cause their victims flesh to ripple and ocular organs to burst outwards. Noxious maggots emerge from their bodies within seconds, burrowing their way out to reveal a new brood of Eyestingers.