42 THE PLUM CTTRCTJLIO. 
Table VI. — Egg-laying records from 10 plum curculios. North East, Pa., 1906. 
Eggs laid each week by each, beetle. 
No. of individual. 
May 
23-29. 
May 
30- 
June 
5. 
June 
6-12. 
June 
13-19. 
June 
20-26. 
June 
27- 
July 
3. 
July 
4-10. 
July 
11-17. 
July 
18-24. 
July 
25-31. 
Aug. 
1-7. 
Total. 
1 
9 
33 
33 
2 
2 
2 
12 
16 
13 
30 
35 
56 
6 
1 
3 
11 
14 
16 
20 
17 
30 
25 
16 
24 
28 
7 
8 
7 
8 
5 
11 
22 
8 
12 
12 
1 
7 
1 
1 
7 
4 
7 
8 
7 
4 
5 
3 
4 
4 
54 
2 
6 
6 
1 
90 
3 
8 
2 
7 
9 
7 
6 
7 
1 
93 
4 
2 
3 
62 
5 
2 
3 
2 
102 
6 
122 
7 
2 
3 
17 
16 
13 
9 
8 
71 
8 
66 
9 
7 
12 
3 
3 
1 
79 
10 
4 
48 
Total 
81 
183 1 197 
94 
54 
48 
18 
66 36 
8 
2 
787 
1 
No. of individual. 
Date last 
egg laid. 
Date of 
death, of 
beetles. 
Days under 
observa- 
tion. 
Days on 
which eggs 
were laid. 
Maximum 
number of 
eggs in 
one day. 
Average 
number of 
eggs laid 
per day. 
1 
July 10 
Aug. 4 
July 7 
July 14 
July 26 
July 2 
July 22 
July 15 
Aug. 1 
Julv 26 
/July 21 
\..do 
/June 5 ! 
\Aug. 282 
/July 28 
\..do 
/July 13 
\July 14 
/Aug. 16 
\..do 
/Aug. 13 
\Aug. 16 
/June 14i 
\July 262 
/July 18i 
\Julv 262 
/Aug. 27 
\..do 
(July 28 
60 
60 
114 
2 98 
67 
67 
52 
53 
86 
86 
83 
86 
123 
2 65 
127 
2 65 
97 
97 
67 
} 30 
\ 32 
} 32 
} 26 
} *> 
} 32 
} - 
} 28 
| 35 
} 22 
6 
16 
15 
6 
11 
16 
4 
7 
6 
5 
1.80 
2 
2.81 
3 
2.91 
4 
2.40 
5 
6 .. 
2.76 
3.81 
7 
2.09 
8 
2.36 
9 
2.26 
10 
2.18 
I July 
/ 
Male. 
2 Female. 
In Table VII are records of eggs laid and of egg punctures by four 
pairs of beetles kept in the insectary at Washington in 1905. 
Table VII. — Egg-laying records from 4 pairs of the plum curculio, Washington, D. C, 
1905. 
EGGS LAID EACH WEEK BY EACH BEETLE. 
No. of pair. 
May 
11-17. 
May 
18-24 
May 
25-31. 
June 
1-7. 
June 
8-14. 
June 
15-21. 
June 
22-28. 
June 
29- 
July 
5. 
July 
6-12. 
July 
13-19. 
July 
20-26. 
Total. 
1 
104 
40 
48 
40 
84 
56 
57 
16 
109 
60 
65 
8 
40 
44 
37 
32 
53 
29 
16 
30 
50 
35 
23 
50 
14 
17 
21 
17 
28 
1 
557 
2 . 
278 
3 
263 
4.. 
126 
Total 
232 
213 
242 
153 
128 
108 
81 
21 
17 
28 
1 
1,224 
