14 THE REPORT OF THE No. 36 



is owing to the fact that the insect first attacks the tops, which results in the kill- 

 ing of the upper limbs. 



The Fall Webworm {Hyphantria textor, Harr.) was again present in con- 

 spicuous numbers throughout Carleton County. Larvae were seen to be just emerg- 

 ing from the eggs at Ottawa on July 8, and a small nest on lilac was observed on 

 July 14, the caterpillars in which were only a day or two old. Full grown larvae 

 were noticed as late as the 6th October. 



Attacking Garden Plants. 



The Tarnished Plant Bug {Lygus prafensis, L.) was very troublesome in 

 gardens the past season. As is well known, this insect not only does injury by 

 sucking the juices from the leaves, but it also pierces the flowers of many plants, 

 thus destroying them. In September the adults were present in thousands around 

 apple and other trees. As they pass the winter in this state, beneath almost any 

 surface shelter, it is important that all garden rubbish be burned in autumn, so as 

 to reduce the hibernating quarters for this and other kinds of injurious insects. 



The Destructive Pea Aphis (Nectarophora pisi, Kalt.) was again present in 

 1909 in the district, on sweet peas in gardens. The first colonies were noticed on 

 July 26. At this date I could not find any winged specimens. The attack, how- 

 ever, was not nearly so severe as the outbreak of 1908. In early September I 

 noticed that the parasite Megorismus Fletcheri, Crawford, which was described in 

 the Canadian Entomologist last March, from Ottawa material, was present in 

 goodly numbers. From parasitized plant lice collected on September 2nd, I 

 secured a further series of the parasites, the specimens emerging on September 15. 



Many plants in gardens were seriously injured during the past season by 

 Red Spider. At the Central Experimental Farm, towards the end of July, Phloxes 

 particularly were seen to be dying from the work of this mite. Few garden plants 

 are free from its attack, and as these creatures are so small, their work is generally 

 unnoticed until a good deal of harm has been done. Flowers of sulphur are use- 

 ful in destroying Red Spider and may be applied in the proportion of one ounce 

 to every gallon of water. As the mites occur chiefly on the underside of the leaves, 

 the spray should be forced up from beneath so as to reach them. 



The interesting and rare little Tortrix (Sparganothis flavihasana, Fern.) was 

 again rather destructive on a few bushes of I^onicera of the Caprifolium group at 

 the Central Experimental Farm. This is the third year in succession that this 

 insect has appeared on the same bushes. This year the larvae were mature on 

 June 15. 



Division No. 3. — Toronto District. By J. B. Williams. 



The Tussock Moth has been, as usual, quite plentiful on many of the shade 

 trees in the city streets. 



At the beginning of the summer the Park Commissioner had many of the 

 trees sprayed with arsenate of lead, and later on, towards the fall, several gangs 

 of men were employed to collect the cocoons; but the city appropriation was not 

 sufficient to do the work thoroughl}^ and as a further grant was refused, the work 

 of collecting the cocoons has come to an end for the present year, just at the time 

 when it might be most successfully pursued. 



Early in the summer one of the Park Commissioner's men brought me a 

 sample of Elm bark covered with a scale that was doing much damage to several 



