Talk:The Endrega Contract/@comment-2601:CB:4001:31CB:902F:7808:30F6:5A76-20171126235600

This article doesn't mention that once you complete the quest, endregas cease to spawn. So if you didn't get enough of their ingredients before you kill the queens, you're sunk. In my case I was just 1 endrega teeth short of what I needed for the Jagged Blade when I accidentally made the forest devoid of all enemies. Probably a game bug.