Update on leaf-feeding willow sawfly
Two species of willow sawfly have been known from Australia since 1994, the willow gall or bean gall sawfly Pontania proxima, and the willow bud sawfly Amauronematus viduatus, both accidentally introduced from the northern hemisphere (Naumann et al. 2002).
The leaf-feeding willow sawfly is a new introduction to Australia, first recorded here in 2003 though the identification has only been confirmed this year.
It is also native to the northern hemisphere, where it is found from Ireland through continental Europe to the Himalayas, and also occurs in North America from Alaska to Mexico.
It was first recorded in the southern hemisphere in Argentina in 1980, in southern Africa in 1993/94 and in New Zealand in 1997.
Topics covered in this factsheet include:
- Biology
- Impact in the southern hemisphere
- Arrival in Australia
- Impact in Australia
- Implicationsfor land managers
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Update on leaf-feeding willow sawfly |
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