SCALE INSECTS. 



13 



parent scale, creeps around over the plant looking for a 

 suitable place to locate. When this is found, the young 

 scale, in the larval stage, settles down and slowly forces its 

 beak through the bark, and simultaneously, or even before 

 this time, forms a waxy protection upon its back. 



r^-Y?. 



Fig. 3. — Adult female, before development of 

 eggs : a, ventral view, showing very long 

 sucking setiB ; b, anal plate, showing char- 

 acteristic ornamentation of edge — greatly 

 enlarged. ( After Howard and Marlatt, 

 Bui. No. 3, N. S., Div. Ent., Dept. Agr.) 



Male and female scales are exactly alike until twelve 

 days after birth, when first molt occurs. After this the 

 two sexes are entirely dissimilar. The males are larger 

 and have large purjale eyes, but the females have lost their 

 eyes. Both have lost their legs and antennjie. The male 



