THE CODLING MOTH ON PEARS IN CALIFORNIA. oi 
interior counties and in the coast counties. The tables giving the 
band records and emergence of moths for Walnut Creek and Suisun 
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 
laboratory records. 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 
this brood was in the 
fruit by the Ist of a2 
June in the adjoiming Saeat alte Bg 
interior counties. 180 
Sn ng “SELLE T PARE 
140 
the band record, and aes Sra: BL 
Table XVIII, giving | 
the record of the 
emergence of moths, — ¢@ 
show the conditions 490 
for Santa Clara 20 
County. The band C 
record was made in 
an unsprayed apple 
orchard. The data 
given in the respective tables are shown diagrammatically in figures 
14 and 15. 
é “= 45 22 29|6 13 2027|3 /0 17 243/| 7 /42/ 
GSWVE YULY” *1*®¥ AUG. SEPT. 
Fia. 12.—Weekly emergence of moths from material collected under 
bands on 11 apple trees at Walnut Creek, Cal., 1910. (Original.) 
TaBLE XVII.—Band records from apple trees, San Jose, Cal., 1909. 
| rT 
Number | Number | Number || Number 
Date of a lane Date of of Jarve I Date of pEDaive Date of oflarvee 
collection. ae | collection. a ae || collection. ce ae collection. eel 
lected. lected. lected, lected. 
ijbiets) Vale seee 1,602 || Aug. 2.... _ 647 || Sept. 13...... 634°|/Oct. 25...-.- | 1 
2825-22 2,276 Weogscr | 365 |) 74) Bee ae 649))||ENov. e--2 =: 8 
Jualy, sd222-2-| 946 || UG See oe 227 || ZY ee 2A) 0 Shocees 3 
een a 1,565 V2 eee | 645)! (@ets 4b =e, 135 ed 
i eae 1,804 | 30a | 880 || Le 92 Dotal 14,759 
DO sec cee GOATS Sept. cose. 951 || nee 18 
Tasie 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. 
| | 
| 
July i a3 ern | A ee 2 884 || Sept. 6.-.... 40 |) Sept. 27....-.. 8 
eee 346 Gieecsee 694 1S aeeee 46 Sas 
36 tie cicieY 731 Bet 2n0% 441 205222, 133 Total. .| 4, 320 
Meo, Seer 777 Oeste 165 | 
