SAWFLY LARVAE EATING THE LEAVES 285 
is eylindrical, light yellow, 
marked with two fine, brown 
lines on the back and two on 
the sides, and distinctly marked 
with two black dots on each 
Fic. 415. — Larva of the Chain Spotted segment. 
Geometer. Original. eB . . 
5 Pupation takes place in a 
delicate, lace-like cocoon among the leaves. The adult moths are 
numerous in late summer. 
The worms are easily 
poisoned by applying arsenate 
of lead or Paris green to the 
fohage. 
\ 
| 
| 
Fie. 416.— Adult of the Chain 
Spotted Geometer. Original. 
The Imported Currant Worm 
(Pteronus ribesti Scop.) 
Currants and gooseberries 
are subject to periodical strip- 
ping by this worm. Through- 
out most of its existence the 
larva is greenish in color, _ ; 
Fig. 417.— The Imported Currant Worm. 
marked with numerous black Wake iad ae -Geal: 
dots, but just before trans- 
forming it is clear green without any dots. When full grown, its 
length is three fourths of an inch. 
