Tenth Annual Meeting 



8 



upon the variety, but if the scales are numerous enough they 

 are bound to prevail in time. Now let us study this a few 

 moments. Coming out from these pores on the back we find 

 this white or grayish mass. As I have said, it somewhat re- 

 sembles the product of the purest white wax used in the arts 

 for making various things, but as a matter of fact it is the 

 product of the insect itself. We must not overlook that. 

 This wax, after a time or in a few days, collapses, or falls 

 over the back of the insect, and then what is known as the 



Fig. 5. — Young larvje and developing scale: a. ventral view of larvic, 

 showing sucking beak with setea separated, with enlarged tarsal claw at right; 

 b, dorsal view of same, somewhat contracted, with the first waxy filaments ap- 

 pearing : c. dorsal and lateral views of same, still more contracted, illustrating 

 further development of wax secretion; d, later stage of same, dorsal and lateral 

 views, showing matting of wax secretions and first form of young scale — all 

 greatly enlarged, (After Howard and Marlatt. Bulletin 5. new series, Div. Ent, 

 U, S. Dept, .^gr. j 



scale appears (Fig. 5, ^) and under the scale the insect itself 

 remains during the period of its existence. The scale is circular 

 in form, usually white at first, and turns them to a yellowish 

 cream color; later on becomes dark or black during the breed- 

 ing season, and then has a sort of creamy fawn color through- 

 out the season. Briefly, that is the life history of this notorious 



