70 



THE REPORT OF THE 



No. 19 



The Scurfy Scale has a very similar life history to the Oyster-shell. It 

 passes the winter in the egg stage, there being from 20-80 purplish red eggs 

 under a single scale covering. About the first of June these hatch into tiny 

 orange or reddish brown larvae, which run about freely for a few hours, and 

 then in some favourable place insert their sucking tube, or proboscis, into 

 the bark, leaf, or fruit and remain stationary henceforth. There is only one 

 generation in a year. 



Many kinds of trees and shrubs are attacked by the scale, but the most 

 common are the apple, pear, quince, currant, gooseberry, mountain ash, 

 white ash, hawthorn and horse chestnut. 



Fig. 26. Scurfy Bark-louse {Chionaspis jurjura). Adult male and female. 



Fig. 27. Scurfy Bark-louse {Chionaspis furjura). Adult female, under surface, show- 

 ing the insect at anterior end, and the numerous purplish eggs. 



