IXSECTS IXJURIOUS TO TOBACCO. 233 



the southern by tlie V-shaped markings along the sides, 

 those of the latter being simple oblique bands. The 

 differences between the moths are well shown in the 

 illustrations. 



Life-history. — The pupae from which these moths 

 emerge in May and June remain in the ground over 

 winter. The females then deposit their eggs, singly, upon 



Fig. 133. — Southern Worm killed by Fungus. (After Garman.) 



the lower surfaces of the tobacco-leaves, which hatch out 

 in three davs. The way in which the younsr w^orms now 

 attack the tobacco foliage is well known to every grower. 

 During their growth, which occupies about three weeks, 

 the worms molt some five times. They then transform to 

 l"»upae, in which state they remain about three weeks, when 

 the adults emerge and the same life-cycle — occupying about 

 six weeks — is repeated. The first brood of worms usually 

 does not do very serious damage, the one in July being 

 that against which the planter's attack should be directed. 

 Usually three broods occur in a season, sometimes but two 



