cock·cha·fer /ˈkɑkˌʧefɚ/
  金龜子,小金蟲
  Cock·chaf·er n.  Zool. A beetle of the genus Melolontha (esp. Melolontha vulgaris) and allied genera; -- called also May bug, chafer, or dorbeetle.
  ◄ ►
  cockchafer
       n : any of various large European beetles destructive to
           vegetation as both larvae and adult [syn: May bug, May
           beetle, Melolontha melolontha]