THE MONTHLY BULLETIN. 



87 



Fig. 68. — The black citrus louse {Toxoptera aurantice Koch). A and B, adult 

 females; C, cornicle and D, antenna of winged female; E and F, same for apterous 

 female; G, third, and H, fourth antennal articles of winged female. (Essig, P. C. 

 Jr. Ent.) 



Life History. — This species may be found in the citrus groves 

 throughout the entire year, all stages being present. The greatest 

 numbers occur during the spring months, when all the new growth 

 may be destroyed on the young trees by them. Older trees are also 

 attacked. The presence of the insects on the larger and older leaves 

 is easily told by their curled appearance, a condition produced by 

 the lice. 



Distribution. — Throughout the entire citrus growing section of 

 the State. Especially abundant in the southern coast counties. 



