sentences:  They are covered in several rows of spiny protrusions.They have six true legs, and ten prolegs.They prefer to eat nettles and, depending upon availability, feed on "Urtica incisa", "Urtica urens", "Parietaria debilis", "Pipturus argenteus", "Parietaria australis", "Parietaria cardiostegia", "Parietaria judaica", and "Soleirolia soleirolii".