6 
BULLETIN" 599, U. S. DEPARTMENT OF AGRICULTURE. 
EMERGENCE OF SPRING BROOD OF MOTHS, 1916. 
The earliest emergence of moths took place on May 22 and be- 
ginning on June 5 was quite regular until July 14, with the maxi- 
mum emergence on June 29. 
Table I. — Emergence of spring brood of moths of the striped peach worm in 1916. 
Date of 
observation. 
Number 
of moths. 
Date of 
observation. 
Number 
of moths. 
Date of 
observation. 
Number 
of moths. 
Date of 
observation. 
Number 
of moths. 
May 22 
May 30 
June 5 
June 6 
June 8 
June 10 
June 11 
1 
2 
1 
4 
5 
6 
3 
June 13 
June 15 
June 17 
June 18 
i June 21 
I June 23 
i June 25 
12! 
s 
21 
56 
43 
17 ! 
June 29 
July 2 
July 4 
Julv 5 
July? 
July 10 
July 12 
60 
32 
14 
3 
18 
4 
2 
July 13 
July 14 
Total... 
3 
3 
364 
OVIPOSITION OF SPRING BROOD OF MOTHS. 
As the moths emerged they were placed in jars with peach foliage 
and fruit. The moths oviposited freely in confinement whenever 
fruit was supplied in the oviposition jars. The eggs were deposited 
both on the fruit (PI. II, fig. 2) and under the scales surrounding the 
attachment of the peach to the stem. In a single instance one egg was 
found in the axil of a peach leaf. On the sand cherry the eggs were 
found under the bud scales at the base of the current season's growth 
and in the axils of the leaves as indicated by the circles shown in 
Plate IV, figure 1,-a. The occurrence of the eggs on the peach under 
orchard conditions was not noted. From Table III it will be seen 
that in 1915 eggs were being deposited in the jars from June 2 until 
June 26. 
LENGTH OF LIFE OF MOTHS OF SPRING BROOD. 
The length of life of 20 adults which were provided with a weak 
solution of clarified honey for food is shown in Table II. 
Table II. — Length of life of 20 moths of the spring brood of the striped peach 
worm, 1916. 
Number of 
moths. 
Davs of 
life. 
Number of 
moths. 
Davs of 
life. 
1 
5 
5 
4 
4 
6 
9 
12 
3 
1 
1 
14 
16 
28 
20 
Maximum length of life days. . 28 
Minimum length of life *. do 4 
Average length of life do 10. 6 
