Kalmar "genus Plethodon" tana nufin gungun ƙananan salamanders marasa huhu waɗanda ke cikin dangin Pletodontidae. Halin ya ƙunshi kusan nau'ikan 50 waɗanda aka samo asali a gabashin Amurka da sassan Mexico. Wadannan salamanders an san su da siririyar jikinsu da dogayen wutsiya, kuma tsawonsu bai wuce inci shida ba. Yawancin nau'ikan Plethodon sun shahara saboda launin su mai haske da ƙima, waɗanda suka bambanta tsakanin nau'ikan nau'ikan kuma suna iya haɗawa da ratsi, tabo, ko speckles. Wadannan salamanders su ne mambobi masu mahimmanci na yanayin yanayin gandun daji, inda suke cin abinci akan kwari da sauran ƙananan invertebrates kuma suna zama ganima ga manyan dabbobi kamar tsuntsaye da maciji.