spindleworm

from The Century Dictionary.

• noun The larva of the noctuid moth Achatodes (or Gortyna) zeæ: so called because it burrows into the spindle of Indian corn. See spindle, n., 3 .

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) The larva of a noctuid mmoth (Achatodes zeæ) which feeds inside the stalks of corn (maize), sometimes causing much damage. It is smooth, with a black head and tail and a row of black dots across each segment.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun rare The larva of a noctuid moth (Achatodes zeae) which feeds inside the stalks of maize, sometimes causing much damage. It is smooth, with a black head and tail and a row of black dots across each segment.