GRUBS DEVELOPING WITHIN THE FRUIT 333 
the orchard. Early in the spring they come out; and as soon as the 
buds are unfolding feed sparingly on the tender tissues. When fruit 
has set, egg laying begins and continues 
for several weeks. Infested fruit is apt 
todrop. The larva enters the ground to 
transform. There is a second generation 
in midsummer, the adult of this hiding 
away until the following spring. 
Control is best directed toward killing 
the overwintering beetles by spraying 
the trees with arsenate of lead or Paris 
green as soon as the buds are fairly open- 
ing in the spring, repeating later if nec- 
essary. Where trees are sprayed at the 
time that the petals fall, this will consti- 
tute the second spraying. In addition, 
it will pay to eliminate rubbish as far as 
possible from the orchard or its neigh- 
. . x “4 Pe ces. © re « > ra 
borhood, and to adopt elean cultivation. — F16- 516.—Larva and work 
: aon of the Plum Curculio ip 
The former will destroy the hiding places diem. Glishily eulersed, 
of the beetles, and the latter will kill 
many of the larve that have entered the soil to transform. The 
destruction of fallen fruit at frequent intervals is of value, where 
feasible. 
On plum trees the beetles may be controlled by jarring them from the 
trees in the early morning, spreading a sheet beneath to catch them. 
The Apple Curculio (Anthonomus quadrigibbus Say) 
Usually the curculio attacking the fruit of the apple is the plum 
curculio. Sometimes the depredator is the pest here considered. The 
work of this species may be distinguished from that of the plum curculio 
by the fact that the punctures that the apple curculio makes are com- 
paratively inconspicuous. The beetle itself is similar to the plum 
curculio, but is stouter and chunkier, has a larger snout, and has four 
very prominent humps on its back. 
