GRUBS DEVELOPING WITHIN THE FRUIT 335 
the punctures as does the curculio. In feeding the beetle gouges out 
small round holes. 
The grub pupates inside the fruit, and then emerges as an adult. In- 
fested plums usually drop before the adult is due to emerge. Hiber- 
nation takes place in the adult stage. 
Jarring the trees to catch the beetles is a fairly effective treatment. 
Prompt destruction of fallen fruit is of value, where practicable. Early 
spraying with arsenate of lead or Paris green, as recommended for the 
plum curculio, is likely 
to kill most of the 
hibernating adults. 
The Grape Curculio 
(Craponius ineequalis 
Say) 
The fruit of grapes is 
sometimes found  in- 
fested by a white, fleshy, 
inactive grub, footless, 
Fic. 520. — Work and larva of the Grape Curculio. 
Slightly enlarged. Original. 
and tapering towards 
each end. This is the larval stage of the grape curculio. It may 
readily be distinguished from the other grub commonly found in 
grapes, that of the grape berry moth, which has distinct legs, is more 
slender and cylindrical, and is greenish 
or light purplish in color. 
The adult beetle is one tenth of an inch 
long, quite broad, and brown in color. 
It appears from hibernation when the 
grapes are blossoming, and feeds on the 
foliage. Laterit begins laying eggs in the 
berries. The grub, when mature, drops 
to the ground, transforms in the soil, and a 
new generation of beetles is abroad in late 
Fig. 521.— The Grape Cur- 
culio. Enlarged and nat- : 2 
ural size. Original. There is thus one generation each year. 
summer, shortly entering hibernation. 
