116 DESTRUCTIVE INSECTS OF VICTORIA. 



PLATE XXXI. 



Phylloxera, ok Gtrape Louse of the Vine (Phylloxera 



VASTATRIX. PlANCHON). 



Fig. 



1. Healthy root. 



2. Stock of a diseased vine, showing also the swellings of the root- 



lets and of the galls on the leaves. 



3. A swelling full grown, covered by young phylloxera. 



4. Winter eggs, and female after laying. 



