12 THE EEPOET OF THE No. 36 



Queen being found with larvae at work. In orchards which are regularly sprayed 

 for Codling Moth there should be no appreciable loss from the attacks of this 

 insect. 



Greenhouse and Garden Plants. 



Last year I mentioned the occurrence of the Greenhouse Leaf-tyer 

 {Phlyctaenia ferrugalis, Hbn.) in the house of one of our local florists. During 

 last spring especially the insect did considerable injury to Azalea, Mignonette, 

 Cyclamens and Cannas, particularly the latter. In some of the Montreal green- 

 houses considerable losiS is occasioned by the larvap of the Black Vine Weevil 

 (OtiorJiynchus sulcattis, Fab.) infesting the roots of Cyclamens, Gloxinias and 

 Adiantums, but we have had no reports of this insect being present in any of the 

 houses in our district. 



Much injury to flowering plants in gardens was done by such regularly 

 occurring pests as Cutworms, Tarnished Plant Bug and Four-lined Leaf 

 Bug. The caterpillars of the White Cabbage Butterfly were also troublesome 

 in beds of Mignonette and Nasturtium. The Grape Vine Leaf Hopper again 

 rendered unsightly the foliage of Virginia Creeper, and in some gardens the 

 Curled Rose Worm and the Destructive Pea Aphis were also present in con- 

 spicuous numbers. 



Attacking Forest and Shade Trees. 



Tent Caterpillars (Malacosoma americana, Harr., and M. disstria, Hbn.) 

 These caterpillars were enormously abundant in the Ottawa district during the past 

 Beajson. Not only did they do serious damage to orchard, shade and forest trees, 

 but they caused much annoyance, e>?p8cially at maturity, by wandering iiDto houses, 

 dropping on to passers-by, etc. Throughout the woods in the district both the 

 American Tent Caterpillar and the Forest Tent Caterpillar ooul,d be seen feeding 

 together on the same trees. The larvse hatched during the first week in May, and 

 before the middle of the month the webs were conspicuous on many trees, par- 

 ticularly wild cherry. In one sonall clump of cberry trees twenty-six webs of the 

 American Tent Cateirpillar were counted on May 13th, and on this date the larvae 

 were about half an inch in length. In another locality, at Woodruffe. near Ottawa, 

 the nests were numerous, and on May 19th the caterpillars were one inch in length. 

 On May 27th at Chelsea, Que., both species occurred together and were in their 

 last larval sitage. Thousands were wandering about along fences, in and around 

 houses, etc. Many trees had been entirely stripped of foliage. On June 5th some 

 cocoonjs of M. americana which had been but recently made were found on apple 

 and the larvae inside were just changing to pupae. While in the Gatineau district, 

 between Wakefield and Maniwaki, on June 12th to 14th, I saw large areas of 

 poplar and birch wbich had been entirely defoliated by the Forest Tenit Cater- 

 pillar. Near St. Joseph village, which is not far from Maniwaki, the caterpillars 

 were so abundant in some of the lakes, that the men who were working on a drive 

 of logs found it almost impossible to dip up water for drinking and cooking pur- 

 poses without getting some of the larvse in their pails. Many of the branches of 

 poplar around tbe edges of these lakes extend out over the water, and I was in- 

 formed that, during a very heavy rainstorm, the caterpillars were dislodged from 

 the trees, falling into the water by hundreds. Just above North Wakefield and 

 Low, Que., extensive tracts of trees, mostly poplars, were seen to have been 



