Dec. 10, 1913 
CalliephiaUes Parasite of Codling Moth 
231 
Table VIII .—Proportion of sexes of CalliephiaUes sp. from bisexual reproduction at 
Vienna t Va., IQI 2 . 
Brood. 
Number 
of 
females. 
Number 
of 
males. 
Ratio of 
females 
to males. 
Hibernating. 
21 
$2 
i: 2.48 
First. 
82 
153 
1:1. 87 
Second. 
20 
112 
1:5. 60 
Third. 
9 
79 
1:8.79 
Total. 
132 
39 6 
1:3.00 
Of the 57 individuals reared from parthenogenetic eggs all were males. 
No definite data were obtained on the longevity of the females, for the 
reason that it was necessary to use all such in propagation experiments, 
and the individuals could not be distinguished. Some information on 
this point can, however, be obtained from the notes on the propagation 
cages. All females were fed, and hence there are no data on longevity 
without food. 
Of the unforced hibernating females the first emerged on May 3 and the 
last on May 13. The latter was a weak individual and lived only 10 
days. The last to emerge previous to it appeared on May 7. The 
earliest death, with the exception mentioned above, occurred on June 4 
* and the last on June 22. This gives a maximum longevity of 50 days, a 
minimum of 22 days, and an average of 36 days. 
Females emerging from June 13 to 17 died from July 9 to August 7. 
The maximum longevity was 55 days, the minimum 22 days, and average 
38.5 days. 
Females emerging from June 24 to 26 died from July 19 to August 9. 
The maximum longevity was 46 days, the minimum 23 days, and the 
average 34.5. 
Females emerging from June 27 to July 1 died from July 9 to 30. The 
maximum longevity was 33 days, the minimum 8 days, and the average 
20.5 days. 
The females surviving on August 9 in all first-generation cages were 
assembled in one cage on that date. Of these, 4 were from a lot emerging 
from June 18 to 20, an average of 51 days previous to the transfer; 3 from 
a lot emerging from June 22 to 23, an average of 47.5 days previously; 3 
emerging from July 3 to 10, 33.5 days previously. The 10 females, after 
being placed together, died August 13 to 19, an average of 7 days later. 
The average longevity of the females from the earliest of the three lots 
was therefore 58 days, of those from the second lot 54.5 days, and of 
those from the third lot 40.5 days. 
The average longevity of all females listed above was 51 days. 
