16 



ENTOMOLOGICAL SOCIETY OF ONTARIO 



scale. They were mostly the Oyster shell Bark-louse, Mytilaspis pomorum (Fir. 5 ) One 

 or two I took to be the Scurfy Bark-louse (Fig. 6), others included the woolly aphis, 

 insect eggs, and a species of lichen. Doubtless the experiment station officers could 

 give a long list of similar inquiries Attention being diverted to those minute insects 

 the presence of the San Jose one will be the more promptly detected. The destructive- 

 neps of this scale and the expense and difficulty of killing it except by methods that 

 endanger its host, will, if a few more instances of its introduction from nurseries occur, 



I ip. 5. 

 Oyste' -si. ell 

 Bark-lout e. 



Fig 6. The Scurfy Bark-louse [Chionaspis furfurus.) 

 lead to legislation. I have met some people who had got the idea that there is a quaran- 

 tine already established against nursery stock imported irom abroad. Reports of the 

 efforts to ob ain such measuns on the other side of the line have probably given rise to 

 the impression. This meeting offers a fitting time and place to give an expression as to 

 whether legislative action should b' taken * 



The San Jose" Scale, if it ever becomes established in this country, will not, like the 

 moths above referred to, be marked by sudden disappearance, nor will it, like the codliDg- 

 moth or pear Psylla. confine its ravages to a single species of tree, nor even to trees 

 under cultivation Prof. Webster, of the Ohio Experiment Station, has published a list 

 of twenty-two trees and shrubs upon which this scale has been found in his State. A 

 list that includes plants with such dissimilar saps and cambiums as walnut, willow, elm, 

 gooseberry, peach, grape, sumac and bass wood may be extended to include almost every 

 tree and shrub in the country The State of Massachusetts has, within the past sevtn 

 years, expended over $600,000 in its efforts to control and exterminate the gypsy moth, 

 but no amount of money could effect the extermination of i his destructive scale insect if 

 it once got a foothold in a widely scattered number of our woodlands and orchard?. 



*In a late discussion Dr. Fletcher p'aced reliance for the suppression of this insect more upon the 

 education and individual efforts of farmers and of fruit-growers than on legislation. Government might 

 assist — as it is doing now through establishing agencies — but io would hi mist dangerous for the people to 

 lapse into indifference owing to the belief that they are protected by an Act of Parliament against invasion 

 by this scale insect. 



