re;port of state) entomologist. 



205 



the insects beneath the scale lose all resemblance to each other. 

 The males (Fig 13 a) are rather larger than the females, and 

 have large purple eyes, while the females have lost their eyes 

 entirely. The legs and antennae have disappeared in both 

 sexes. The males are elongated and pyriform, while the females 

 are almost circular, without organs except a long sucking bristle 

 springing from near the centre beneath. Eighteen days from 

 birth the males change to the first pupal condition (Fig, 13 b) 

 and the male scales assume an elongated oval. The female 

 undergoes a second molt about twenty days from the larva." 

 "The effect of the sucking of the insect is now quite apparent 

 on the young growth, causing the bark to assume a purplish hue 

 for some distance around the central portion contrasting 

 strongly with the natural reddish green of the uninjured bark." 



Fig. 13. Aspidiotus perniciosus ; development 

 of male San Jose scale; a, ventral view of 

 larva after first molt; b, same after second 

 molt (pro-pupa stage); c and d, true pupa, 

 ventral and dorsal views. All greatly en- 

 larged. (Howard and Marlatt. Bulletin 62, 

 Div. of Entomology, U. S. Uept. of Agri.) 



