COTTON 



115 



THE BOLL WEEVIL AND ITS STAGES 



Fig. 1, Adult boll weevil, viewed from above; a, two teeth on fore 

 femur; fig. 2, adult weevil, side view; fig. 3, egg of weevil; fig. 4, 

 grub about two days old; fig. 5, grub at entrance to second stage 

 after shedding first skin, about three days old; fig. 6, grub fully 

 grown, about ten days from egg; fig. 7, transformation or pupal 

 stage, side view, snout, legs and wings forming; fig. 8, pupal stage, 

 front view of fig. 7. Figs. 1, 2, 6, 7 and 8 enlarged about ten diam- 

 eters; figs. 3, 4 and 5 enlarged about twenty diameters. 



