THE CODLING MOTH IN THE OZARKS. 5 
larvee and pups produced 275 adults. A much larger number of pup 
than of larve were injured in collecting and failed to give out moths. 
This, together with the fact that 193 of the total number collected 
were taken after emergence had begun, would throw the maximum 
of emergence here shown considerably later than it should be. As 
before stated, about 25 per cent of the moths had emerged in the 
field, from cocoons above ground, by April 21. 
In 1907 Mr. Dudley Moulton records the finding of a few empty 
pupal skins while collecting wintering material in an open packing 
shed April 27. This was 25 days after the apple blossoms had fallen, 
a period of cold weather occupying the interval. From material 
then collected moths continued to issue in the laboratory until June 1. 
50 
40 
30 Fe 
zo 
10 
0 rt 
Apr, ie 14 (6 18 20 22 24 26 28 30 May 4 6 8 10 12 14 16 18 20 22 24 26 28 go June 3 Sunred, 
Fig. 1.—Curve showing emergence of spring brood of adults of codling moth (Carpocapsa pomonella) 
from collected wintering material. 
Life of the moth.—Records of 28 spring-brood moths emerging 
April 13-23, and confined in a Riley rearing cage out of doors, show 
an average life of 10.5 days. Another lot of 35 moths that emerged 
April 25 to May 4 gives an average life of 9.1 days. The life of the 
moths is largely dependent on temperature. They are able to lay 
fertile eggs in 3 to 5 days after emergence, but during cold weather in 
spring or fall they remain torpid for long periods. Moths can be fed 
by putting into the cage a piece of raw cotton soaked in sirup or 
fruit juice. However, even without food, if a sufficient number of 
moths are confined together, eggs will be laid abundantly. Data on 
caged spring-brood moths are given in Tables V and VI. These 
moths issued from the wintering material collected March 24 and 
March 31. 
84606—Bull. 80, pt i—09——2 
