286 PESTS OF ORCHARD AND SMALL FRUITS 
The pupal stage is passed in 
little cells in the soil. There 
are two generations, one lot of 
worms appearing in early sum- 
mer and the second brood five 
or six weeks later. Hibernation 
takes place in the pupal stage. 
The adult is a sawfly. 
: Until currants are ripe the 
Fic. 418.—Cocoons of the Imported best remedy is an application 
Currant Worm. Original. of Paris green and lime. If 
the spraying is done early, arsenate of lead may be used. When the 
fruit is coloring, use 
hellebore. 
The Native Cur- 
rant Worm (Di- 
phadnus appendicu- 
latus Hartig) causes 
similar defoliation. 
The larva is half an 
inch long, and light 
Fie. 419. — Adult of the Imported Cur- 
rant Worm. Enlarged and natural 
size. Original. 
green, without black spots. There 
are two generations. The adult 
is a sawfly. The measures of con- 
trol are the same as for the im- 
Fic. 420.— Adult of the Native Cur- Benes See Ears en 
rant Worm. Enlarged and natural may be used safely until the fruit 
size. Original. is half grown. 
