INSECTS INJURIOUS TO THE ORANGE. 



403 



lines and dots, as shown at b in Fig. 414. The eggs, which 

 often number a hundred under a single scale, vary in color 



from yellow to light 

 -^^^•^^^- reddish brown, and 



are nearly oval in 

 form. The voun<r 

 louse is of a simi- 

 lar color, very ac- 

 tive, and when first 

 hatched appears as 

 shown in Fig. 415, 

 where it is much 

 enlarged. It crawls 

 about briskly for 

 half an hour or 

 more, then settles 



on some spot, inserts its proboscis, and remains permanently 

 fixed. Within a few days the limbs are drawn under the 

 body, and white, cottony tufts are secreted from the surface ; 

 these gradually condense, forming waxy plates, which cover 

 and protect the insect beneath. The scales are shown of 

 their natural size, on a branch of ilex, in Fig. 414 ; a young 

 female scale is shown at a, and a mature one at 6, both 

 enlarged. 



This scale is common on the orange, lemon, and other trees 



