white pine sawfly
... that heavy infestations of white pine sawfly can defoliate a tree or even kill it?
... that heavy infestations of <b id="mwBJ4"><a href="./Neodiprion_pinetum" id="mwBJ8" rel="mw:WikiLink" title="Neodiprion pinetum">white pine sawfly</a></b> can defoliate a tree or even kill it?