56 
The following are the band records taken by Mr. Ayers, of Boise 
r > . - 9 
on 140 trees: 
| | 
| 
Date. Larve. Date. | Larve. 
1897 1898 
WU; 2 see ae eee oes ses eee ere 862: | DULY Sas 352, e eee ee eee ete 1,118 
UV eo os crue ese teen cease ne se 704} July 1S se coca Lome nee ae Se eee 2, 201 
TUG). bo ae ae Gees Ae et eae eres 1268. ||) Duly 20. cS ee See ee eee 2,020 
TNT sO aan been eaane meee Cee oie tee is FAO ULAR G.kte cect oes teen oe eee eee 1, 454 
PATI ORISE Orava). Cee enn oOo eee Ae ea) A 6060) Aligust 845425755 See eee | 1, 335 
AVIOUSGO ee once Sone ee eee ees en eee 290°) August’ shies ask cnet oe ee eee 963 
PANTO al ot <= Se. A ee SS ol 580°) AMsustl?. cn6 522528 ee a eee 1, 095 
PMUIPUSE DO a2 sche hssodecec ces Hee ctecees 684:)/"-Ausust: 24. coasts ce eee ee ee eereiners 1,125 
September’2)= ss... cee see men aee eee 1526 || AUSUSE Slens. sSoe-ccteec ee Seater 1, 580 
peplemperil0 Sse acc seers. acecses esses 1;.227° || September 7.22.2. -+2----02seee = sees 1,474 
September Qian. so. -kem a see es aaa eee 1340. September 4 Sse eee eee eee 1,860 
OY #6) 012) oz! RR ERS Ary ae a aS ee | 15642: September 22.222 ss2scc+-ees ss eeee eco 1, 965 
OctanerilO sss eee SAR be. ees eS 778,40 etober ty-s - ea none ey eee a eee 1, 594 
October 10.2 se eee ee ee eee 1,125 
From the preceding record, from that of Professor Aldrich taken 
at Juliaetta for 1899, and my own I have compiled the following table: 
| 
1897. | 1898. 1899. | 1900. 
First brood: 
WIGS CTT SVC eee a eS, ie Re ae Re aes See Pe ee ae ered A eo July 16} July 13] July 21 | July 15 
Minimum Aug. 9! Aug. 10 | Aug. 12 | Aug. 4 
Second brood: 
Maximum 
Minimum 
Third brood: 
Maximum 
Minimum 
Sept. 2} Aug. 31 | Aug. 18 E 
Sept. 10 | Sept. 7} Sept. 4 | Sept. 1 
From these records, supplemented “by observation, I can say defi- 
nitely that there are three broods in the vicinity of Boise and the 
greater part of the Snake River Valley. 
As to the fourth brood I have no definite information at hand. 
Several growers have told me that such a brood exists in part. At 
certain periods it is impossible to say to what brood an insect belongs. 
For instance, in 1900, if a half-grown larva was found October 4 it 
would be impossible to know whether it was the last of the third or 
the first of the fourth. When cold weather comes, there are many 
interesting things apparent. If young larve are left in the fruit on 
the ground, they evidently perish. However, if taken inside with the 
apples they complete their development, and if not destroyed insure 
a crop of moths for the following spring. About September 5 it was 
noticed that the larve that had spun cocoons were not transforming, 
but were still in the larval state, while those that had reached the pupa 
state were developing slowly and the moths were emerging. It is 
evident that it takes a higher temperature for the insect to change from 
larva to pupa than from pupa to adult. 
MOISTURE AND HEAT. 
There is great mortality among the eggs of this insect, the direct 
rays of the hot sun causing many to die. 
