The legend of the Titanslayer:
70,000 years ago, a Lightwing animus, brought together 12 other animus from other tribes, to slay the Chimerawings, who, at the time, were called the Titans. A poison was made that affected only Chimerawings, and it was spread into all water on Pyrrhia, except one spot, forcing the Chimerawings to go to that spot. He used the Lightbane to strike down the strongest of them.
The animus had used their powers to see into the future to see how they stopped the Chimerawings, and saw that they cursed them to look like hivewings (hivewings didn't exist then though) and so they made that curse.
This legend however, has been distorted over the time, and many believe it is of how a animus turned evil and killed the Protarian titans.