FEMALES ARE SCARY, pretty much no matter the species. Even so, there are so many creepy moments in this article about cannibalistic sugar mamas, I don't even know where to begin. Well, I suppose this description of dead suitors leaving behind their leftover genitalia seems a good a place as any:

Scientists have found other species in which males encourage their own cannibalism. One remarkable twist on this strategy is seen in a species of orb-weaving spiders. The males suddenly die as they mate. The male’s death may be a strategy for preventing other males from mating with the female. In death, its sexual organ becomes stuck in the female’s receptacle. Even if she feeds on the rest of his body, the organ remains behind, preventing her from receiving more sperm.

Um. Jeez.