INSECTS INJURIOUS TO CITRUS GROVES. 517 



The young larvae are motile and crawl about over the 

 leaves and twigs for several hours like young scales 

 before they fasten themselves to the leaves. The larvae 

 are attached to the under sides of the leaves and are in- 

 conspicuous, because of their transparency and greenish 

 tinge. If the leaf be so doubled in the hand that air is 

 admitted beneath the insect, it at once becomes readily 

 seen and is translucent, whitish green, spotted with orange. 



The pupa, to an ordinary observer, is quite similar 

 to the fourth larval stage, but more plump and of thicker 

 body; broadly oval. Measurements about as in fourth 

 .stage, slightly narrower. A broad, deep orange or coral- 

 red spot on the back near the anterior end of abdomen; 

 eyes purplish; vasiform opening and ring brown; trans- 

 verse ridges on abdomen shorter and less distinct than 

 in last larval stage. 



The adult female is slightly over 1-20 of an inch 

 ^1.4 mm) in length, the wing expanse being about twice 

 the length of the body (2.8 mm). The color is light 

 orange, with the rostrum, or beak, tipped with black. 

 The wings are colorless when newly hatched, but within 

 two or three hours become covered with a fine white wax, 

 hence, the name, "mealy-wing," sometimes given to the 

 insect. The body also becomes covered with more or less 

 of wax, but its ground color is not wholly obscured. 

 The tarsi are two-jointed. The eyes, reddish-brown in 

 color, are each divided into two parts by a curved ridge 

 projecting from the cheek, the upper divisions being 

 the smaller. The ovipositor is short and retractile. 



The male resembles the female, but is smaller, with 

 the head and abdomen having heavier tufts of adhering 

 wax. The abdomen is more slender and has at its termi- 

 nation a pair of claspers slightly curved upwards. 



