Answer: girdler

AnswerCrossword Clue
GIRDLERBeetle harmful to trees.
GIRDLERCorsetiere.
girdlerperson or thing that girdles
girdlerperson who makes girdles
girdlerany of several insects, as a beetle, Oncideres cingulata(twig girdler), that cut a groove around the bark of a twig, stem, etc.
girdlerone that girdles (to encircle with a belt)