U.S. D. A., B. E. Bul. 80, Part I. D. F. I. 1., June 26, 1909, 
PAPERS ON DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
THE CODLING MOTH IN THE OZARKS. 
By E. L. Jenne, 
Engaged in Deciduous Fruit Insect Investigations. 
In 1907 the Bureau of Entomology undertook some experimental 
and demonstration spraying for the control of the codling moth at 
Siloam Springs, Benton County, Arkansas. The work being largely 
investigation of remedies, only a few notes relating to the life history 
of the insect were secured. The following season a fuller line of 
rearing work was conducted at the same place, and the present 
account of the codling moth in that locality applies mainly to the 
season of 1908. Data for 1907 are introduced for comparison, where 
it is possible. 
In 1908 the rearing work was conducted out of doors. Moths 
were confined in Riley rearing cages; larve were reared in fruit 
inclosed in paper bags on the trees, or in picked fruit in muslin- 
covered battery jars; and the pupal periods were observed in small 
vials. 
SEASONAL HISTORY. 
SPRING BROOD OF PUPZ.? 
Duration of the brood.—The earliest pupe did not come under 
observation, but judging from the first emergence of moths and the 
length of the earliest observed spring pupal stages, pupation began 
in late February or early March. 
a The term ‘‘brood”’ is used in speaking of any single stage of the insect, and ‘‘gen- 
eration” to include all the stages of the life cycle. 
The pupze and moths produced by the transformation of the wintering larve are 
sometimes termed ‘‘first-brood pup” and ‘‘first-brood moths.’’ Here, however, 
the first generation is regarded as beginning with the first eggs of the season, and 
ending with the moths that develop therefrom. Where three generations of the 
insect occur, the adult stages are spoken of as moths of spring brood, moths of first 
brood, and moths of second brood. The adults of the third generation become the 
spring brood of moths for the succeeding year. The spring moths lay the first-brood 
eggs, the first-brood moths lay the second-brood eggs, and second-brood moths lay 
the third-brood eggs. 
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