SAWFLY LARVAE EATING THE LEAVES 



285 



is cylindrical, 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 

 segment. 



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 



foliage. 



Fig. 415. — Larva of the Chain Spotted 

 Geometer. Original. 



Fig. 416. — Adult of the Chain 

 Spotted Geometer. Original. 



The Imported Currant Worm 

 {Pteronus ribesii 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, 

 marked with numerous black 

 dots, but just before trans- 

 forming it is clear green without any dots. When full grown, its 

 length is three fourths of an inch. 



Fig. 417. — The Imported Currant Worm. 

 Work and larviE. Original. 



