10 
BULLETIN 571, U. S. DEPARTMENT OF AGRICULTURE. 
As is shown in Table II, the first moths of the season issued on 
May 15 and the last adults appeared on August 5, making a period 
of 82 days for the emergence of all individuals. The maximum 
emergence for a single day occurred on June 24, when 38 moths 
issued. A summary of Table II shows that 29 moths emerged from 
May 15 to 31, 238 from June 1 to 30, 114 from July 1 to 31, and 4 
from August 1 to 5. Out of 238 moths to issue in June, 71 came 
forth during the first half of the month, while 167 emerged during 
June 15 to 30, which marks the period of maximum emergence. It 
is to be noted also that of the 114 moths issuing during July 100 
emerged from July 1 to 14. So far as the records go, the last moth 
observed in the field was on August 1. From July 20 to the close 
of the month there was an extremely sudden decrease in the number 
of adults in the various pecan orchards in which observations were 
made. 
During the season of 1915 rearing cages to determine the emer- 
gence of moths were examined daily, except on June 13, 15, 17, July 
6, 13, 15, and 22. The dates of issuance of 591 individuals are 
shown in Table III. 
Table III. 
Time of emergence of moths of the pecan leaf case-bearer during 1915 at 
Monticello, Fla. 
Number 
Date of 
Number 
Date of 
Number 
Date of 
Number 
Date of 
of 
emer- 
of 
emer- 
of 
emer- 
of 
emer- 
moths. 
gence. 
moths. 
gence. 
moths. 
gence. 
moths. 
gence. 
1915. 
1915. 
1915. 
1915. 
2 
May 22 
6 
June 5 
31 
June 21 
6 
July 4 
3 
May 24 
20 
June 6 
31 
June 22 
13 
July 5 
1 
May 25 
11 
June 7 
24 
June 23 
22 
July 7 
1 
May 26 
5 
June 8 
12 
June 24 
7 
July 8 
4 
Mav 27 
7 
June 9 
6 
June 25 
6 
July 9 
2 
May 28 
8 
June 10 
14 
June 26 
10 
July 10 
10 
May 29 
22 
June 11 
11 
June 27 
13 
July 11 
1 
May 30 
22 
June 12 
16 
June 28 
5 
July 12 
2 
May 31 
33 
June 14 
16 
June 29 
10 
July 14 
16 
June 1 
12 
June 16 
6 
June 30 
3 
July 16 
5 
June 2 
12 
June 18 
16 
July 1 
1 
July 17 
21 
June 3 
16 
June 19 
10 
July 2 
2 
July 21 
6 
June 4 
I 
28 
June 20 
22 
July 3 
2 
July 23 
As shown in Table III, the first moth of the season issued on May 
22 ; and the last adults appeared on July 23. A summary of Table 
III shows that 26 moths emerged from May 22 to 31, 417 from June 
1 to 30, and 148 from July 1 to 23. Out of 417 adults issuing during 
June, 235 appeared from June 16 to 30, which period marks the time 
of maximum emergence. It should be noted also that of 148 moths 
emerging during July, 140 issued from July 1 to 14. 
The habits of moths in pecan orchards. — When the moths are at rest 
the wings are folded rooflike on the abdomen and the head and 
anterior part of the body are held in a somewhat elevated position. 
During the day the moths prefer to frequent the weeds at' the base of 
the trees, but they are also to be found hiding in the dense foliage of 
