The Hobo Spider

The reason they hurt so much is that normally they bite very large animals. They don't adjust for when they're biting on human skin, which is really quite thin. So it hits the nerves rather quicker. One of the house spiders we have in this country has been accidentally imported into the Western seaboard of the USA where it's spread further and further north year by year. And it's known as the Hobo Spider because it catches lifts on trains.