6 BULLETIN 599, U. S. DEPARTMENT OF AGRICULTURE. 
EMERGENCE OF SPRING BRGOD 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 1.—EHmergence of spring brood of moths of the striped peach worm in 1916. 
Date of Number Date of Number Date of Number Dateof | Number 
observation. | of moths. || observation. | of moths. || observation. | of moths. || observation. | of moths. 
DUNES sees 1D) } ANE s = ose 60 || July 13....... 
May 22... 1 3 
May 30. PA ||) Uietare) jo SS oe SOU naliy Dee eee a¥ou Abi ee 3 
dpi De esas | HEU O eee 24a} |i cily 4 ee eee 14 —_-— 
Ui Os soeoe AA une gee Syl ||| Althea 58S 3 Total... 364 
JME} SW) dharaveal oie Deol | viuliyalane acess 18 
June Os eee 6) |||, Sune2seeesee 43 || July 10..-..-. 4 
une lee eae 3) oUNe 2 eee ii foal wa Dy gel ae eerne 2 
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. Ina 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 IT. 
TABLE II.—Length of life of 20 moths of the spring brood of the striped peach 
worm, 1916. 
Number of Days of Number of Days of 
moths. life. moths. life. 
1 4 3 14 
5 6 1 16 
5 | 9 1 28 
4 12 | 
| 20 
Maxineumalens thoes on.) 2a ts se A eer ene Hees ok ee pin atan or days.. 28 
Minimumilensthomlites: ee sa es et ee ee ee eee eee do 
‘Averagelensthioflife 233402 Nee aoe ee She Re Re eek eile eee ee dotsiiyi10s6 
