LOOK FOR

Look for in shoots
• Weak shoot growth
  
  Look for in leaves
• Premature yellowing of autumn foliage
  

   CONDITIONS

• Spreads in infested soil but is restricted by quarantine
• Phylloxera is a small, yellow aphid-like insect which lives mainly on vine roots.
• Phylloxera occurs in Victoria at Rutherglen, Milawa, Glenrowan, Mooroopna, Ardmona and Nagambie, and in New South Wales near Sydney and Corowa-Albury.
• In New Zealand, phylloxera occus throughout the North Island and is present in the north of the South Island.
  

   NOTES

Direct examination of roots is the only reliable way to identify phylloxera.
Leaf galls are uncommon in Australia and New Zealand because they form on American but rarely on European (vinifera) vines. As more rootstocks are planted, leaf galls are likely to become more common in infested areas.