Arthropods Daily – Issue No. 324

P. muscorum is a type of woodlouse that can grow up to 11 millimeters long and has a shiny, greyish-brown body. It is known for being faster than other common woodlice species, with a raised body and a dark-colored head. There are twelve recognized subspecies of P. muscorum. For more information on woodlice in the British Isles, you can refer to the list of woodlice of the region.