420 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 13 
in the extreme South. General activity begins with the first warm sum¬ 
mer weather early in June. While some bugs die early, most of them 
live until about August 1 or later. In 1918 one female lived until 
August 28. Egg production continues with little diminution until 
death. In 1917 over-wintered females deposited on the average 502.5 
eggs each; in 1918, 419. In the latter case totals were reduced by the 
escape of several females early in the season, daily averages for 1918 
giving a seasonal total of 634 eggs per female. These average totals 
exclude the few which died early in the season. 
Table III.— Average Egg-Production of Over- 
Wintered Females 
Period 
Eggs per female per day 
1917 
1918 
May 30—June 15. 
No figures 
2.5 
June 16—June 30. 
9.9 
10.3 
July 1—15. 
13.1 
11.8 
July 16—31. 
9.1 
8.5 
Aug. 1—15. 
12.1 
3.6 
Aug. 16—18. 
6.0 
Aug. 16—27. 
7.1 
Average for period June 16- 
Aug. 18. 
10.4 
9.0 
Table IV.— Eggs Produced in Each 
Month, Per Cent of Total 
I 
Month 
1917 
1918 
May. 
0 
1.4 
June. 
24.3 
30.8 
July. 
63.4 
54.2 
Aug. 
12.3 
13.6 
Summer Generations. The earliest of the first generation mature 
in July and the latest some time in October. In 1917 two females 
deposited an average of 356 eggs each before death late in August, 
averaging 9.6 eggs per female per day. Those maturing later produced 
fewer eggs, but about 80 per cent of the first summer generation became 
adult before September 1, or in time to produce some eggs. 
The nymphs of the second generation are very numerous in late 
summer. The earliest of them become adult about August 20 at 
Wichita, and produce a few eggs. In 1918 four females of this genera¬ 
tion produced a total of 335 eggs before ceasing; and averaged 8.4 
eggs per female per day, from August 25 to September 3. Later individ¬ 
uals become adult throughout the fall and many perish from cold before 
maturing. The nymphs of the third generation are present at Wichita 
during the fall. Most of them probably perish before maturity. None 
have been known to mature, although one was reared to the fifth stage 
by October 5. 
Fall Activities. The first cool nights about September 1 check 
activities. Bugs maturing after this neither copulate nor oviposit. 
Those already producing show a marked checking of reproductive 
activities, which cease within about two weeks. From the few individ¬ 
uals studied, it seems that the adults of the first generation which have 
produced many eggs, die before fall; but those adults which have pro- 
