Pyrausta nubilalis n 1: larva of the European corn borer moth; a serious pest of maize [syn: {corn borer}, {Pyrausta nubilalis}] 2: native to Europe; in America the larvae bore into the stem and crown of corn and other plants [syn: {corn borer}, {European corn borer moth}, {corn borer moth}, {Pyrausta nubilalis}]