10:; 



PESTS OP THK COTTON PI,\\T. 



beetle is gTiulually fonned. Tlie lieeilo iliai oraevg-es is of a dark 

 bronze colour, hard; with leg-s, wiug's and antennae. It measures one-third 

 of an inch in length and is rocog-nisable by its colour, its size and 



appcaraucr ni 



its truncated 

 front. 



It enicrg'es through the 

 thin bark left by the grub. 

 Having- mated, the female 

 beetle lays cg-g's and dies. 



These beetles are not 

 easily noticed in thej cotton 

 fields. They fly actively 

 and are sometimes found on 

 four irregular 



Fig. 115. 

 Sfeiii Borer Larva. 



as many as 



the leaves of the plant. There may be 

 broods during the cotton season; the 

 "first is a small one and only few plants are destroyed ; the second is a 

 large one, the beetles of tlie first brood laying many eggs ; the third 

 brood is large but is liable to suffer much from parasites ; the fourth 

 brood may be very small and is not important, the cotton having been 



Fig. 116. 

 Fupa in stem. 



Fig. 117. 



Stem Borer Ftqia. 



{Magnified three times.) 



Fig. 118. 

 Hole where Beetle emerges. 



picked before its arrival. These broods are quite irregular and not well 

 marked, since the beetles do not all come out at once. The destruction 

 to the plants will be noticed when flowers come out ; it may be seen 

 earlier, depending upon the growth of the cotton. 



