sentences:  They are up to 40 mm long and most commonly live in holes in trees formed by beetle and moth larvae or where rot has set in after a twig has broken off.The hole, called a gallery, is maintained by the wētā and any growth of the bark surrounding the opening is chewed away.They readily occupy a preformed gallery in a piece of wood (a "wētā motel") and can be kept in a suburban garden as pets.