Cellar Spider (family Pholcidae): While it’s tough to say from the photo we believe this might be the Longbodied Cellar Spider (Pholcus phalangioides). This long-legged spider is found throughout the world and is common across the US. They are typically found in undisturbed, low light places …so basements, garages, caves, under rocks and ledges are good places to find them. They are originally a species from warmer areas and are unable to survive Montana winters. But thanks to their habit of hanging out in out-of-the-way and dark places, they’ve managed to make a living and remain mostly unseen in our homes. Photo by Brandon Wasser on 9/11/18 in Missoula, MT.