182 Frit Fly in Relation to Blindness in ()<ttx 



suitable tillers, in view of the more advanced condition of the crop and 

 the consequent lessening of the light at the base, compels a certain 

 1111 in her to choose the next most suitable site, with the results shown. 



Exact information on this matter, however, is not available. 



Another sifce for this brood found in some abundance during 1917 

 was on the stems of winter wheat. The larvae were feeding on the stems 

 from the base to at least the third node up and the pupae were found in 

 the leaf sheath anywhere between the node and the ligule. 



DESCRIPTION OF PLATE XII 



Fig. 1. Two oat ears attacked with pupae in situ. Higher oat ear with pupa on rachis. 

 Lower one with one pupa in centre and one at the base. 



Fig. 2. Specimens of frit fly damage on panicles. (The one in the bottom right-hand 

 corner has lost all spikelets.) 



