THE CODLING MOTH ON PEARS IN CALIFORNIA. 
27 
almost continuously from April to August, inclusive, and do not 
recognize the broods at all. 
However, it is well to know when these 
broods appear, and what is meant by the term “‘brood.” 
The overwintering larve pupate in spring; the moths emerging 
from these in late 
April and during May 
deposit eggs which 
hatch into the first- 
brood worms. This 
brood is usually com- 
paratively small and 
the injury not severe. 
Some growers are in- 
clined to overlook the 
importance of this 
brood, and many fail 
to notice any worms 
until the second brood 
begins to show just 
prior to first picking. 
The second is by far 
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ESTSSIBS | Pe ESE] 
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et Pe 
29| § /2 1926|3 10/7 24 
YUNE SUL) 
Fic. 7,—Codling-moth larve collected from banded pear trees at Walnut 
Creek, Cal., 1909. (Original. ) 
7 142/ 28\§ 12/19 26|2 9 16 23 
AUG. SEAT | OG 
the more destructive of the two broods, both by reason of its numbers 
and because of the stage of the fruit when it appears. 
The first-brood 
worms reach their development usually during the months of May and 
June, pupate, and adults emerge and begin depositing eggs some one 
or two weeks before the first picking of 1 pears commences. 
Growers 
can tell very well when the first of the second-brood worms will begin 
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Sf See eae sees eee 
BEF ailseeuueeee 
to appear by the use 
of burlap bands put 
on the trees in May. 
Examine these once 
a week and when the 
first larvee are caught 
/00 
Ar Re SAL A+ AL ’ é ‘ 
G0 under them they may 
SGV Sa ANe 4 ee : Heel 
mp NSE be put into glass jars 
wee JN 
ARR RRS RRR 
6) 3 /0 /7243/\ 7 1/4 2/1 28\ § 12 1/9 26\3 10/7 24 
| ena ULE A SBE EL 
Fic. 8.—Codling-moth larvz collected from banded apple trees at 
Walnut Creek, Cal., 1909. 
or tumblers with bits 
of paper or rags and 
kept under normal 
out-of-doors condi- 
tions. When the first 
(Original. ) 
moths appear it will then be some two weeks before eggs are hatching. 
BAND RECORDS. 
Some idea of the development of the first-brood larvae and the time 
of leaving fruit may be gained from Tables X and XI, which are the 
band records at Walnut Creek for 1909. 
(See also figs. 7 and 8, which 
show this data in diagrammatic form.) 
