THE CODLING MOTH ON PEARS IN CALIFORNIA. 
interior counties and in the coast counties. 
dl 
The tables giving the 
band records and emergence of moths for Walnut Creek and on 
sections show the maximum emergence of moths to be about three 
weeks earlier than the maximum emergence at San Jose. 
Extended 
field observations covering the seasons of 1909-10 confirm these 
Many first-brood larve were hatching and 
entering fruit in early July in Santa Clara, Santa Cruz, and Monterey 
and in Mendocino and Humboldt Counties along the coast, while all 
laboratory records. 
this brood was in the 
fruit by the ist of 
June in the adjoining 
interior counties. 
Table XVII, giving 
the band record, and 
Table XVIII, giving 
the record of the 
emergence of moths, 
show the conditions 
for Santa Clara 
County. The band 
record was made in 
an unsprayed apple 
orchard. The data 
240 
JARS eS Sees eee Ss 
co fed en i ieee 
RRR eeee 
Peel AL | 
Fig. 12.—Weekly emergence of moths from material collected under 
bands on 11 apple trees at Walnut Creek, Cal., 1910. (Original.) 
iven in the respective tables are shown diagrammatically in figures 
p 5 y $ 
14 and 15. 
TaBLeE XVII.—Band records from apple trees, San Jose, Cal., 1909. 
Number | Number | Number Number 
{ larvee of larve | of larvee of larvee 
Date of o Date of Date of : Date of : 
: and pu- ae and pu- | 4 and pu- mae and pu- 
collection. pe col- collection. pe col- || collection. pe col- collection. pe ¢ol- 
lected. lected. || lected. lected. 
JUNG A 2 1,602 |} Aug. 2 zi 647 |) Septl13fs2--2 634 || Oct. 25.. 1 
Pee aes 2,276 | sees 365 || 203822 649) ||| Novis, Pes. 25: 8 
Jive ose 946 || 162s. 227 | Diem 271 Sian 3 
122- 1,565 | Eee e 645 Octs 4252 = 135 |} — 
1 Seer 1,804 | Cee ee 880 hiss 92 Total 14,759 
2GEc2. 52 1,041 | Sept. 6.2... - 951 Pee sae 18 
Taste XVIII.—Emergence of moths from banded apple trees, San Jose, Cal., 1909. 
| 
Date of Number | Date of Number || Date of | Number Date of Number 
emergence. | of moths. || emergence. | of moths. || emergence. | of moths. emergence. | of moths. 
Subs 222 Bon||) Ap. AOE. coe), 884 || Sept. 6.-....| 40) ||Sept.27.....- 8 
Ieee 2 346 beer a | 694 eeu 46 a 
Shee ae 731 Zope 441 20ers 133 Total - - 4,320 
INVER ica ae 777 Sonn | 165 | | 
