INSECTS INJURIOUS TO THE ORANGE. 



413 



measure, when spread, about one-tenth of an inch across. 

 The body is brown ; the eyes are dull red. 



FIG. 429. 



FIG. 430. 



REMEDIES. 



In treating of the remedies for scale-insects and mealy- 

 bugs, those provided by nature will first claim our atten- 

 tion. Under the several species discussed, reference has been 

 made to the parasitic flies which destroy them, as these are 

 often limited in their attacks to one species. The preda- 

 ceous insects, which feed on them indiscriminately, will now 

 claim attention ; these consist mainly of various species of 

 lady-birds. These useful insects vary in size, and are usually 

 red, yellow, or black, with spots of one or the other of these 

 colors. Some of them are found from the Atlantic to the 

 Pacific, such as the nine-spotted lady-bird, Fig. 123; the 

 plain lady-bird, Fig. 125; the convergent lady-bird, Fig. 

 128; the spotted lady-bird, Fig. 129; and the twice-stabbed 

 lady-bird, Fig. 33. Those which follow are restricted to the 

 Pacific coast, or are more abundant there. Lady-birds, both 

 in their larval and in their perfect state, devour scale-insects, 

 mealy-bugs, and aphides. 



