92 
THE PLUM CURCULIO. 
From all of the foregoing data it is clearly shown how important is 
moisture for the transformation of the curculio in the soil. In general, 
no adults issued from a dry soil, and in a soil moist at time of entrance 
of larvae, but allowed naturally to dry out, the number emerging was 
greatly reduced, from 88.23 per cent to 27.94 per cent, as compared 
with condition of checks. Dryness does not appear to affect the 
length of the stages, as the average days spent in the soil of individuals 
of both series is about the same. As shown in Table XLV the mor- 
tality seems to be largely after transformation to the beetle stage has 
occurred, if the soil was moist at the time the larvae entered. 
THE ADULT. 
PERIOD OF EMERGENCE OF BEETLES. 
As elsewhere shown (p. 48) oviposition extends over several weeks, 
or even months. It follows that the beetles resulting from the eggs 
will emerge during a similar interval of time, and this period may be 
considerably modified by the condition of the soil, as whether dry, or 
sufficiently moist to permit the prompt escape of the beetle when suf- 
ficiently hardened. 
Records of the emergence of beetles during the season, as obtained 
from the larval emergence records detailed in Table XXII, are shown 
in Table XLVIII from Barnesville, Ga.; Siloam Springs, Ark.; Wash- 
ington, D. C; and Douglas, Mich. 
Table XLVIII. — Emergence from the soil of beetles of the plum curculio during the season, 
several localities. 
Dates of 
emer- 
gence. 
Barnes- 
ville, Ga. 
Siloam 
Springs, 
Ark. 
Washing- 
ton, D.C. 
Doug- 
las, 
Mich. 
Dates of 
emer- 
gence. 
Barnes- 
ville, Ga. 
Siloam 
Springs, 
Ark. 
Washing- 
ton, D.C. 
Doug- 
las, 
Mich. 
9 
13 
18 
26 
33 
105 
135 
132 
150 
141 
108 
128 
61 
47 
57 
50 
38 
43 
33 
19 
16 
1 
24 
9 
11 
July 1.... 
2.... 
3.... 
4.... 
5.... 
9 
2 
6 
6 
14 
83 
107 
30 
12 
3 
55 
2 
2 
9 
56 
12 
14 
2 
16 
7 
64 
10 
13 
10 
3 
5 
9 
6 
69 
41 
49 
54 
60 
15 
8 
20 
39 
43 
29 
17 
39 
15 
96 
31 
80 
56 
16 
34 
141 
197 
67 
55 
25 
8 . 
9 . 
10.... 
11.... 
1 
5 
1 
4 
17 
15 
16 
36 
45 
44 
45 
7 
115 
133 
142 
65 
28 
181 
100 
45 
6.... 
..... 
12... 
13 . 
8.... 
9.... 
10 
3 
1 
14 . 

15 
16 
11 
17 
12.... 
13 
3 
18 
19 
14 
20... 
15. . . . 
21... 

10.... 
17.. 
1 
22. . . . 
23.... 
18 . 
24.... 
19 :.. 
25. ..„ 
3 
6 
3 
22 
14 
14 
20 . 
26... V 
21 
27.... 
22 
28. . . . 
23 
29. . . . 
24 
30.. 
25 
26 
Total. 
1,407 
1,045 
62 
27 
4 
1 
44 
32 
28.... 
