The origin is from my fingertips lol
But really I am just curious, I have seen what each of the bites can do, its pretty ugly, but can be treated if addressed quickly. It helps to know which spiders I will ignore, and which I will take outside lol. I do not get many spiders here though, but used to get many in other places, esp with crawl spaces.
P.S. spiders are not a foe, they eat many other things which are far more annoying.