86 
THE PLUM CTJRCULIO. 
These individuals were also kept in vials under out-of-doors 
conditions. The average of the 68 examples for the time spent 
in soil previous to pupation is seen to be 12.03 days; for the pupal 
stage, 14.12 days; and an average of 7.10 days was spent in the 
soil before exit of adult, after transformation. The average of 
the total days in the soil for all stages is 33.28 days. The range 
in time in soil before pupation is from 7 to 19 days. The range 
for the pupal stage is from 9 to 19 days; and for the beetle in the 
earth, 3 to 13 days. The entire time spent in the ground varies 
from 28 to 39 days. 
Similar data from Barnesville, Ga., obtained during 1910, are 
shown in Table XLIII. Records for 38 individuals were obtained 
from May 20 to July 11, when the last beetle left the soil. The 
insects were placed in glass-bottomed boxes containing a shallow 
layer of sand and kept in a dark box under shade out of doors. 
Table XLIII. — Length of pupal instar of the plum curculio and time spent in the soil as 
larva and as adult, Barnesville. Ga.. 1910. 
Individual No. 
Date 
larva left 
fruit. 
Date of 
pupa- 
tion. 
Dale of 
transfor- 
mation 
to beetle. 
Date 
beetle left 
the soil. 
Days in 
larval 
stage 
previous 
to pupa- 
tion. 
Days in 
piipal 
stage. 
Days as 
beetle 
in soil. 
Total 
days in 
soil. 
x 
May 20 
.. .do 
June 5 
Jime 7 
May 31 
June 3 
...do.... 
...do.... 
June 4 
June 5 
...do 
June 14 
June 17 
June 8 
June 13 
June 12 
June 13 
June 14 
June 15 
June 14 
June 15 
June 14 
June 16 
...do 
June 11 
June 18 
June 19 
June 21 
June 25 
June 26 
June 25 
July 3 
July 6 
...do 
Julv 7 
...do 
Julv 4 
July 1 
July 2 
...do 
Julv 4 
...do 
...do.... 
July 7 
July 6 
...do 
...do.... 
...do.... 
June 20 
June 22 
June 14 
June 19 
June 20 
...do.... 
June 21 
...do 
June 20 
...do 
June 23 
June 24 
June 21 
June 20 
June 24 
June 25 
June 27 
Julv 1 
Julv 2 
June 29 
Julv 6 
Julv 11 
July 12 
Julv 9 
July 14 
July 9 
Julv 7 
...do 
...do.... 
Julv 10 
...do 
Julv S 
July 11 
Julv 10 
...do 
...do.... 
July 11 
16 
18 
11 
14 
14 
14 
15 
16 
16 
16 
16 
16 
17 
13 
18 
19 
22 
26 
27 
13 
18 
19 
19 
20 
20 
15 
12 
12 
12 
13 
13 
1J 
16 
14 
14 
14 
14 
9 
10 
6 
5 
31 
2 
33 
3 
...do... 
8 
10 
9 
10 
10 
10 
9 
10 
9 
11 
ro 
8 
10 
10 
9 
9 
9 
8 
8 
10 
9 
9 
9 
9 
8 
9 
9 
9 
6 
6 
8 
7 
7 
6 
6 
5 
9 
8 
5 
9 
6 
6 
6 
6 
6 
4 
3 
5 
6 
2 
7 
5 
6 
5 
5 
6 
25 
30 
4 
..do... 
5 
6 
...do.... 
...do.... 
31 
31 
7 
...do.... 
32 
8 
...do.... 
32 
9 
...do 
31 
10 
...do.... 
...do 
31 
11 
12 . 
...do.... 
..do 
...do.... 
...do 
34 
35 
13 
.do 
June 6 
June 3 
June 8 
June 9 
June 12 
June 16 
June 17 
...do 
June 25 
June 26 
June 27 
June 28 
...do 
June 25 
June 23 
...do.... 
...do.... 
June 25 
...do.... 
.. .do 
June 28 
June 27 
...do.... 
...do.... 
...do.... 
32 
14 
May 21 
...do 
...do.... 
...do.... 
...do.... 
...do 
30 
15 
16 
17 
18 
19 
34 
35 
37 
41 
42 
20... 
June 4 
June 7 
...do.... 
June 8 
...do.... 
...do.... 
June 10 
June 11 
...do.... 
...do.... 
June 12 
...do.... 
...do.... 
...do.... 
June 13 
...do.... 
...do 
...do 
25 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
29 
34 
34 
31 
36 
29 
26 
26 
26 
28 
31 
32 
33 
34 
y 6 
9 4 
9 ; 4 
9 4 
9 4 
9 1 4 
9 5 
28 
26 
29 
27 
35 
36 
37 
27 
27 
28 
Total 
595 
340 208 
1.143 
Averages for all indi- 
viduals 
16.08 1 9.18 
5.62 
30.89 
