Where does “κωλοφωτιά” come from?

κωλοφωτιά (Greek) comes from Greek φωτιά, from Byzantine Greek φωτία, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-, from Proto-Indo-European bʰeh₂-s-ri-.

κωλοφωτιά (Greek): firefly