✔ 最佳答案
Your spider is one of the ground spiders called a parson spider. they are not dangerous at all, but are outdoor spiders. I usually just catch them and return them out doors.
Two species in north America, here is some info for the eastern parson spider:
http://www.spiders.us/species/herpyllus-ecclesiasticus/
參考: Been around spiders 50 years.