girdler

 One who girdles.  [1913 Webster]

 A maker of girdles.  [1913 Webster]

 An American longicorn beetle (Oncideres cingulatus) which lays its eggs in the twigs of the hickory, and then girdles each branch by gnawing a groove around it, thus killing it to provide suitable food for the larvæ.  [1913 Webster]