wheatworm

from WordNet (r) 3.0 (2006)

wheatworm
    n 1: small roundworm parasitic on wheat [syn: {wheatworm},
         {wheat eel}, {wheat eelworm}, {Tylenchus tritici}]

from The Collaborative International Dictionary of English v.0.48

Wheatworm \Wheat"worm`\, n.
   A small nematode worm ({Tylenchus tritici}, formerly
   {Anguillula tritici}) which attacks wheat, advancing through
   the stem to the grains in the ear. In wheat affected with
   smut, each of the diseased grains may contain a large number
   of the minute young of the worm.
   [Webster 1913 Suppl.]