Ma'anar ƙamus na "caterpillar tanti na gandun daji" yana nufin wani nau'in caterpillar wanda ke cikin nau'in Malacosoma disstria, wanda aka fi samu a cikin dazuzzuka na Arewacin Amirka. An san katafilar gandun daji da dabi’a ta musamman na gina tanti na siliki ko tabarmi a kan rassan bishiya, inda suke taruwa da kuma ciyar da ganyen bishiyu iri-iri. Caterpillar tana da jiki mai launin ruwan kasa-launin toka mai launin fari, alamomi masu sifar maɓalli a bayanta, kuma tana bi matakai da yawa na girma, tana narke exoskeleton yayin girma. Ana daukar caterpillars na gandun daji a matsayin masu lalata, saboda yanayin ciyar da su a wasu lokuta na iya haifar da lalacewa mai yawa ga bishiyoyi, kodayake bishiyoyi masu lafiya galibi suna iya murmurewa daga lalacewa. Dabbobin dazuzzuka wani muhimmin bangare ne na tsarin dazuzzukan da suke rayuwa, suna zama tushen abinci ga tsuntsaye da sauran namun daji, kuma masana kimiyyar halittu da namun daji kan yi nazari akai-akai don kara fahimtar ilmin halittarsu da muhallinsu.