Porcellio dilatatus

Porcellio dilatatus, known as the giant canyon isopod, is a species of woodlouse in the family Porcellionidae, native to Europe and introduced to North America. It grows to about 15 millimeters long, is brown with striping, and feeds as a saprophage on decaying plant matter; it is often found in greenhouses, seed boxes and flower pots, where it is regarded as a house pest. Five subspecies of the species are recognized. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/