• Burns, Denver P.
  USDA Forest Service
  

The yellow-poplar weevil has in recent years injured leaves and defoliated trees of the yellow poplar one of the most important hardwoods in the Appalachian Mountain region. The weevil occurred in large numbers in scattered localities before 1960 and was not considered a serious threat to yellow-poplar. But in 1960, 1962, 1965, L967, and 1968, populations of the insect increased to damaging levels throughout large areas of the Appalachians. The causes of these recent epidemics are not known.