That is definately 'not' a juvie trap door
and it isn't a hobo spider
hobo spiders usually make a flat weband hide in a corner they also like it cool
the spider in the picture we have here in Mi. I find them under very damp logs or boards with some fungus on it. the web is very weak looks to be like a cribelate type web.
I have to dig up a book for the name