10 BULLETIX 123, V. S. DEPARTMENT OF AGRICULTURE. 



Fig:ure ('■> shows on the left the characteristic opening made b}' the 

 ordinary bolhvorni {Chlorhlea obsolcta). It is of large size and 

 surrounded hj a raised margin. The exit holes of the pink boll- 

 worm, on the left, are much smaller, more regular, and without raised 

 margins. 



Figure 7 shows the appearance of locks of cotton, exhibiting t3^pi- 

 cal injur}' by the pink boll worm. 



Figure 8 shows individual seeds infested by the pink bollworm. 

 In the lower line are the "double seeds." These are frequently 



Fig. 6. — Two bolls showing distinction between exit holes of the ordinary bollworm 

 or corn carworm (Chloridca ohsoleta) and those of the pink bollworm (Pcctinophora 

 flosatjiiicUd). The large hole in the boll to the left was made by the ordinary boll- 

 worm and the two small ones in the boll to the right are typical of the pink boll- 

 worm. 



ft;iir,d as the result of the webbing together of two seeds by larvae of 

 the later stages in order to obtain more room for pupation. 



Figures 9 and 10 illustrate the pink bollworm in a burr and the 

 typical opening made by this insect when it makes its way from one 

 lock to another. 



Although these descHjytions may help in enabling any one to 

 determine whether the pinh hollworm is present in a cotton field, it 

 will always he hest to send any specvmens: to an entomologist without 

 delay for aufhoAtallre defermmation. It is extremely imq^ortant 

 that any posnilile infestat'ton hy this insect he hrought to attention 



