Ma'anar ƙamus na "fall cankerworm" wani nau'i ne na caterpillar wanda kwaro ne na bishiyoyi masu banƙyama, musamman a Arewacin Amirka. Hakanan ana kiranta da "inchworm" ko "tsutsa mai aunawa" saboda takamaiman hanyar motsi. Ana kiran wannan tsutsotsin faɗuwar cankerworm ne saboda yawanci yana fitowa a cikin fall kuma yana ciyar da ganyen bishiyoyi, yana haifar da lalacewa da lalata bishiyar. Matakan sarrafa faɗuwar cankerworm sun haɗa da kawar da jiki, ayyukan al'adu, da amfani da maganin kwari.