
- 7 - 
the experimental orchard, the larvae have not completed their develop- 
ment within the normal period. This constitutes a case of semistar- 
vation, due to the females depositing more eggs than the food supply 
present in the nut would justify, In other words, the quantity of food 
is insufficient to permit the full development of the larvae. Appar- 
ently no cannibalism exists." 
os 
/ -- BE. J; Newcomer, Yakima, Wash., reports that he and his assistants 
"have been studying the distribution on the tree of blemishes caused 
On apples by the codling moth, and have found some rather interesting 
things. The data used were taken’ from 10 trees in 1928 that were arbi- 
trarily divided vertically into four quarters, each of which was divided 
horizontally into two parts. We thus have records of the fruit from & 
sections of each tree. We find a very high correlation between number 
of fruits and number of blemishes, the coefficient being .754 + .046. 
* * * ‘There is also a definite correlation between number of blemishes 
per fruit and height, the number being larger in the upper half of the 
tree. The coefficient figured. .499 + .Q57,.*:* *. This study indicates 
that use of actual numbers of wormy or blemished fruits for comparative 
purposes is apt to be misleading. If less than whole trees are used, 
the portions shou'd be vertical sectors of about the same size and ta- 
Ken from the same side of each tree. This procedure should eliminate 
most of the variation caused by variation in crop, but it will not elim-— 
inate variation caused by field heterogeneity." 
The data taken by J. L. Gardiner in the oriental fruit moth trap 
work at Harriman, Tenn., were tabulated in January and a report sub- 
Mitted by H. G. Butler, which concludes, "During the winter of -1930- 
$1 a large number of peach mummies were * * * examined for oriental 
fruit moth larvae. It was found that an average of one larva could be 
found for each peach mummy. This winter similar examinations have been 
made * * * and it has been found that larvae are practically absent 
from peach mummies. It is thought that possibly the long-continued 
warm weather last fall permitted the immature larvae to complete their 
feeding and move to better hibernation quarters." 
L. F. Steiner, Cornelia, Ga., has been analyzing data.and prepar- 
ing a map of the 1931 large-scale bait trap area, and reports: "The 
Oriental fruit moths at time of capture were most numerous near the 
boundaries of the area. The maps show clearly that experimental baits 
when compared in field tests must be represented by a large number of 
traps uniformly distributed among each other if errors due to varia- 
tions in the intensity of the moth population are to be minimized. 
* * * Fruit and twig injury within the area was distributed more uni- 
formly than the moth captures. Indications are that only a small per- 
centage of the moths are captured in traps nearest their place of emer-— 
gence. With continued baiting. over a period of years it appears likely 
that a difference in the intensity of the infestation inside as com- 
pared with that along the boundaries of the area will develop and gradu- 
ally increase." 
= = 
