B. C. ENTOMOLOGICAL PROCEEDINGS, 1911. 



REPORT FROM OKANAGAN DISTRICT. 



The purpiisc of this paper is to take a more or less rough survey of 

 the Okanagan ih'strict, not confining myself necessarily to last season, 

 as I have not haJ time to do an\- collecting worth speaking of during 

 1011. 



I hope, however, that the paper ma\' not be altogether uninterestmg 

 to the members present. I feel that a list of my captures would not be 

 of much particular interest. I shall, therefore, begin by giving notes on 

 those species which have been, during the last few years, of some 

 economic importance, with notes on other species that may be of use to 

 those who are working on the distribution and life histories of the 

 insects of the Province. 



The past few years have not been marked by any serious outbreak 

 of injurious insects, but certain species have done a good deal of harm. 

 Among these the Fall Webworm has been quite troublesome in some 

 districts. Hand picking or burning the webs with a torch has been 

 found the most simple and effective means of destroying them ; but 

 where spraying has to be done for fungous troubles, Paris Green may 

 be mixed with the Sulphate of Copper solution to advantage. 



The Caterpillar of the Diamond Back Woth, which is very numer- 

 ous at all seasons, was found to be attacked by a parasite, a species of 

 Ichneumon which emerged in large numbers from the chrysalids in 

 breeding jars. The Diamond Back Moth is becoming as serious an 

 enemy to cabbage growing in the open as Pieris rupae, but as the same 

 remedy, the mixture of flour and insect powder destroys both, there is 

 not much danger for the crop where steps are taken in time. 



The larvae of Datana ininistra attracts some attention by stripping 

 the leaves from young fruit trees during the summer, but this species 

 never appears in sufficient numbers to cause any great harm. 



During the summer of 1908 there was a somewhat interesting attack 

 on prune trees, by a small larva to which I have applied the name 

 the "Prime Twig Borer." My attention was attracted by noticing that 

 the terminal shoots were in many cases drying up for no apparent reason. 

 On examination, however, it was found that these twigs were being 

 bored by a small brown caterpillar eating the pith of the young shoot. 

 By and bye I noticed that these shoots broke off with the contained larva, 

 which no doubt enters the ground to pupate. I have so far been imable 

 to discover to what species the damage is due. 



