. f  
  Spraying Apple Trees. 29 1
  4
  in some entomological writings. The apex of the front wings isi  
  occupied by another dusky mark. The outer half of the hind wing . i
  is pale yellow, the inner half, dusky. j
  Wing expanse, 0.80 to 1.00 inch (20 to 25 min.), from front 1
  to tips of folded wings, 0.50 inch (12 mm.)._  
  Numerous other plants besides apple are attacked by this {
  species, among them clover, cotton, strawberry, rose, plum, birch,  
gy bean, honeysuckle, cherry and others. l
  The species occurs from the Atlantic to the Pacific Ocean.  
  THE APPLE TREE MEASURING WORM.  
  (Ermomos subsignarius).  
t 5 Two brown or black looping caterpillars occurring on apple -  
  trees in this State are not always discriminated by fruit growers, l
jb who speak of both as canker worms. The true canker worm while 1 B i
I sometimes found in Kentucky is not as mischievous as it is farther  
  north. The species here treated is sometimes very common locally  
9 and may defoliate whole orchards at times, but its larva is so much i X
‘ like that of the true canker worm that one might be excused for i
failing to recognize the differences. The adult moths, however,  
  are very different, though the insects are members of the same  
‘ family.  
i The Apple Tree Measuring Worm remains on the trees over  ,_l
* i winter as an egg, large numbers of which are placed in patches on  
f I · the under sides of the twigs in early summer. They have been  
’ ' said to be placed always on the upper branches of trees, but as ob-  Q
1 served by me on apple trees this is not always, nor chiefly, the  
  case, since eggs could readily be found on branches to be reached  
i by the hands while standing under trees. These eggs are arranged  
. in straggling patches from about two-thirds to an inch and a third  
long a.nd about two—tenths inch wide. They are not arranged  
symmetrically, though in some cases an appearance of curved cross 3
lines could be made out. They are attached by the side of one end -  
and are often inclined and overlapped.  
_ Eggs received from Muhlenburg County in 1905 began hatch-  
Y ing April 7, all yielding larvae between this date and April 9. iji
" The young come forth through an elliptical margined area at the  
free extremity of the egg, and creep about freely at once, spinning  
A
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