1 1 



JAPANESE BEETLE. 



The so-called Japanese beetle. Adoretus tenuimaculatus 

 Waterhouse, has injured cotton to some extent, attacking the 

 foliage. It has not been considered as serious a pest with 



regard to cotton as it has 

 w i t h other cultivated 

 plants, although a small 

 planting of Chinese cot- 

 ton was utterly defoli- 

 ated by it. This variety 

 seems to be especially susceptible, while the Caravonica cot- 

 ton shows little susceptibility to attack. 



Fig. 4. — Japanese beetle, 

 Adoretus tenuimaculatus Water- 

 house- Natural size indicated 

 by line. (Copied from Kot- 

 inskyO 



MEALY BUG AND SCALE INSECTS. 



Two serious pests of cotton are found in the mealy bugs 

 (Coccidae) known scientifically as Pseudococcus virgatus (Ckll.) 

 and Pseudococcus filamentosus (Ckll.). Neither of them is con- 

 fined wholly to cotton, 

 each having a long list of 

 hosts among both wild and 

 cultivated plants. For this 

 reason their attacks are 

 likely to be more or less 

 intermittent and perhaps 

 negligible. An outbreak 

 of either in the cotton 

 field, however, would re- 

 sult in considerable dam- 

 age to the crop and would 

 be most difficult to control 

 by artificial means. 



Pseudococcus virgatus is 

 a common pest of culti- 

 vated plants in several 

 countries. Cockerell dis- 

 covered it in Jamaica on 

 cultivated violets, algaroba. and other wild plants; Koebele 



Fig. 5.— Pseudococcus virgatus (Ckll.) Adult 

 female. (Photograph by author. ) 



