- 8 - 
Table 2. — The effect of different foods on the length of the 
oviposition period of the white-fringed beetle, Florala, Ala., 1938, 
Length of oviposition period 
Number of 
Average 
Range 
Food 
beetles 
(days) 
(days) 
Cotton 
17 
93.9 
37-133 
Peanut 
20 
66.1 
40- 97 
Strawberry 
7 
52.0 
9- 88 
Blackberry 
14 
50.1 
18- 94 
Pecan 
20 
47.9 
1- 95 
Grass 
11 
10.2 
1- 22 
Postovipositio n perio d. — The average length of life for 32 beetles in 
1937 after they had deposited their last eggs was 13.7 days. 
The postoviposition periods for beetles fed on various kinds of 
foliage during 1938 are shown in table 3. The average postoviposition period 
ranged from 10.1 days for beetles fed on peanut foliage to 16.7 days for 
beetles fed on pecan foliage. A few beetles deposited eggs on the date they 
died, but the majority lived for a week or more after egg laying ceased. 
Table 3. — The effect of different foods on the length of the 
postoviposition period of the white-fringed beetle, Florala, Ala., 1938, 
Length of postoviposition period 
Food Number Average • • • Range 
of beetles (days) (days) 
Pecan 
20 
Cotton 
17 
Grass 
11 
Strawberry 
6 
Blackberry 
14 
Peanut 
20 
16.7 
0-63 
14.8 
2-44 
12.4 
1-22 
12.3 
3-22 
10.9 
2-24 
10.1 
4-27 
L engt h of life of adults. — The average length of life of 32 beetles 
in 1937 was 97 days. The maximum length of life was 147 days for a beetle 
which emerged on July 21 and died on December 15. Three of these beetles 
were fed on peanut foliage and 17 on cotton foliage throughout their life 
span and 12 on cotton foliage for a period and then on peanut foliage. 
The average longevity for 26 newly emerged beetles kept without food in 
1937 was 13.8 days and the maximum was 46 days. The average longevity for 
45 unfed beetles in 1938 was 19.8 days and the maximum was 62 days. 
The longevity for beetles fed on different kinds of foliage and for 
beetles kept without food in 1938 is shown in table 4. The maximum longevity 
was 171 days for a beetle which emerged on June 12 and was fed on cotton 
foliage. 
