62 



THE REPORT OF THE 



[19 



Fig49. Larch Saw-Fly. (a), the saw-fly with wings outspread ; (6), the 

 brown pupa case ; (c) terminal twig of larch showing eggs in slits made by the 

 female saw-fly. 



~ • On June 10th the larch grove was sprayed with Paris Green (| lb. to the barrel)i 

 but as this solution was rather weak, and as 'many of the trees towards the centre of the 

 grove could not be thoroughly sprayed, or even sprayed at all, the trees were found to 

 be still infested three weeks later. 



The lar\fe giow| repidly, and at maturity are nearly one inch in leDgth. The de- 

 foliation "of the larger trees near the centre of the grove was almost complete. 



On July 20th no larvae could be found ; those that had survived the Paris Green 

 had descended to the ground, and pupated. The oval, spindle-shaped pupte (Fig. 9 b) 

 could be found quite abundantly under the trees among the litter of leaves. These re- 

 main in thegrcund all winter, and the adults will emerge about the end of May. 



References : 



121. 



1844. Ratzeburg — Forest Insects- 



1881. Hagen— Can. Ent.— p. 37. 



1883. Fyles— An. Rep. Ent. Soc. Ont.— p. 17. 



1884. Fletcher— An. Rep. Ent. Soc. Ont.— pp. 72, 77. 



" Harriugton — " p. 

 " Fletcher— Oan. Ent., Nov. 

 " Fyles— Can. Ent., Nov. 



1885. Fyles— An. Rep. Ent. Soc. Ont.— p. 12. 



1886. Jack— " p, 16. 



1887. Lintner— « p. 32. 



1888. Saunders— " p, 31. 



1889. Howard— " p. 26. 

 " Fletcher— " p. 38. 



68. 



