THE CITRUS MEALY BUG 



295 



Nursery uiul Greenhouse Stock. All imported nursery stock must l)c 

 I ejected and returned to the place from whence it came. Too great care 

 cannot be exercised in this matter. 



DESCRIPTION OF FEMALE. 



Larvae (Fig. 112). The larvae, after the time of hatching, pass through 

 three distinct stages or moults, before they become adults. During the first 

 stage the nymphs average 0.4 mm. in length, and 0.19 mm. in width. They 

 vary from straw-yellow to orange in color, are oval in shape, and are quite 

 active. Tlie antennae are large for the size of the body, are 7-articled, and 



Figure 112. Female of Pseudococcus citri. 

 A, egg; B, young female in second instar; (', ventral view of adult female to show 

 antennae, legs, rostrum, spiracles, and lateral spines. 



clothed with hair. The abdomen is divided into 8 rather distinct segments, 

 while the remainder of the body-segmentation is obscure. The eyes are small, 

 black, and project beyond the body. The legs are large and ungainly. Coxa?, 

 femora, and tarsi all longer than the tibi,-e. During the second stage the 

 nymphs have attained 0.635 mm. in length and 0.3 in width. Otherwise 

 they cannot be told from the first stage. The third stage is so much like 

 the adult form that the difference cannot be distinguished, except for the 

 size. This form has an 8-articled antennre. From the first stage up through 



