“Can you guess my age? I’m twenty-six years old. We’re plagued by a condition that causes rapid aging. The only way to reverse it is to kill and suck the lives out of young men.

You have to understand, this is not something we want to do. We don’t take pleasure from it. It tears out your heart. But no matter how much the kills torment you, how many tears you cry, there’s no stopping it. The biological imperative is virtually impossible to resist.”

– Charlotte

So spider creatures aren’t considered Wesen per se. And there are apparently many kinds. But it isn’t clear whether it’s more of a classification thing (“not part of the phyllum”) or a prejudice thing (“not a fan of spiders”).