93 



Paris green, applied dry as for the cotton worm, will 

 be found satisfactory for the control of this insect, when it 

 occurs in sufficient abundance to render necessary the use 

 of insecticides. 



TOBACCO. 



the tobacco worm {Protoparce sextet, Johanssen). 



Lepidoptera. 



The leaves of the tobacco plant are often eaten by 

 large green caterpillars, with oblique, whitish bands on 

 the sides. The adult insect is a hawk moth, grey in colour 

 with dark-brown or black lines marking wings and body. 

 The spots, ranged in a row on each side of the abdomen, 

 are yellow in colour. The northern tobacco worm (Proto- 

 parce celeus) shown in Fig. 103, is similar in general 

 appearance to the West Indian species. 



Fig. 103a. Northern tobacco worm. 

 Moth. Natural size. (From U.S. Dept. Agric.) 



The female moth deposits the eggs singly on the 

 leaves and other parts of the plant. The full-grown larva 

 reaches a length of 2J to 3 inches. The pupa is formed in 

 the ground. The developing proboscis in its protective 

 covering forms a sort of handle, which is a characteristic 

 feature of insects of this group. 



