56 



Insect Pests. 



them. During the past year the writer visited a plantation in 

 December in which the bands were all dry, a few days later the 

 females were appearing in numbers, and thus, for saving a small 

 additional expense, all that had been spent in banding the trees was 

 wasted. Moreover, the bands frequently become so smothered with 

 insects that others can readily pass over their dead bodies. It is not 



[F. Edende 



FIG. 45. A GREASE-BANDED APPLE TRE] 

 (The band here is placed far too high.) 



only female Winter Moths that are caught, but the winged males in 

 large numbers and these aid very materially in covering the bands. 

 Numbers of the Winter Gnats (Trichocera regelationis) also get caught 

 and many midges and other flies, all tending to smother the grease 

 and so make a bridge for later hatched moths to cross. These 

 covered bands should be cleared and smeared again. 



The numbers of females caught on each band is frequently very 



