12 



FRUIT INSECTS 



Fig. 



7. — Codlin-moth, adult, 

 photo (X 3). 



Knight 



enti of Urn cocoon and spin a tube of silk out to the sur- 

 face, stretching a thin sheath of silk across the opening at the 

 ending of the cocoon, which is ruptured when the moth emerges. 

 The time spent in the pupal state varies with the climate, but 



averages not far from 

 26 or 28 days for the 

 spring brood. The 

 pupa is about J inch 

 in length and varies ac- 

 cording to age from 

 yellowish to brown. Its 

 back is armed with trans- 

 verse rows of minute 

 spines, by means of 

 which it is able to push 

 itself part way out of 

 the cocoon just before the moth em(Tges. 



The adult is a beautiful moth about f inch across th(^ (ex- 

 panded wings (Figs. 7 and 8). Tht^ front wings have the general 

 appearance of watered silk, this effect being produced by alter- 

 nating irregular lines of 

 brown and l)luisli gray. 

 Near the hind angle is ;i 

 large, light brown area 

 boun(l(Ml on the inner 

 side by an irregular choc- 

 olate brown band and 

 crossed by two similar 

 bands of a metallic cop- 

 pery or golden color in 

 certain lights. The hind 



wings are coppery brown, darker towards the margin. 

 sexes are very similar, but the male may be distinguished 

 by the presence of an elongate dark area on the underside of 



Fi( 



8. — ■ Codlin-moth resting on a 

 apple. Knight photo (X 2^). 



inxall 



The 



