24 



FRUIT INSECTS 



inch in length, and pinkish or nearly 

 white in color (Fig. 18). They leave 

 the fruit in the fall a little later than 

 the codlin-moth larvae and spin cocoons 

 in similar situations ; occasionally pu- 

 pation occurs within the apple itself 

 (Fig. 20). The larva may be distin- 

 guished from that of the codlin-moth 

 by its smaller size, and by having a 

 brownish, comb-like structure on the 

 caudal curvature of the anal plate visible 

 only under a 



Fig. 19. — Cocoon of the . i 



lesser apple worm with SXrong lens. 

 empty pupa skin protrud- The CO- 



ing (x 7). 



c o o n 1 s 



about J inch long, lined with white 



silk and covered on the outside with 



bits of bark and dirt (Fig. 19). The 



following spring the larva changes 



to a brownish pupa less than J inch 



in length. The dorsal surface is 



armed with transverse rows of short 



spines by which the pupa works itself 



part way out of the cocoon before the emergence of the moth. 



The empty pupa case is usually left attached to the cocoon. 

 The moth (Fig. 21) measures about yV inch across the expanded 



wings. The front 

 wings have the gen- 

 eral appearance of 

 watered silk when 

 viewed with the un- 

 aided eye. The gen- 

 eral color is a warm 

 brown, darker on the 



Fk;. 20. — Empty pupa skin 

 of lesser worm protruding from 

 end of small apple. 



Fiti. 21. 



Lesser apple worm moth (X 5). 



