Excellent post @agmoore, a few weeks ago I was shared a video of a spider (black widow) feeding on a snake, it was really something surprising that video, as it is really difficult for a small spider to feed on an animal much larger than itself, but nature never ceases to amaze. Likewise, these spiders have one of the most powerful poisons in the world, so the snake had the bad luck to fall into its web or perhaps someone threw it.

I liked this post, I congratulate you for this good work!

Since you mentioned the spiders of the genus Latrodectus, here is an image where you can see the species of this genus.