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Uraba lugens in New Zealand, August 1998

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Formerly known as the Forest Research Institute, Scion has been a leader in research relating to forest health for over 50 years. The Rotorua-based Crown Research Institute continues to provide science that will protect all forests from damage caused by insect pests, pathogens and weeds. The information presented below arises from these research activities.

From Forest Health News 77, August 1998.

On 4 August 1998, Les Renney (Forest Health Adviser, MAF) found a few small (1st and 2nd instar) larvae of the gum leaf skeletoniser, Uraba lugens, on two Eucalyptus cinerea trees on the Omanu Golf Course at Mt Maunganui. These trees had not been sprayed last year or earlier this year (FHNews 72: 3, March 1998). Les reports that the larvae were present in very low numbers and were hard to find.

The finding of small larvae at this time of year is quite consistent with what is known about the biology of Uraba and fits in with what was found last year. These larvae should not pupate until late November or early December so there is time to conduct further surveys before any decisions need to be made about how to deal with the situation. It is important to note that there is no evidence, at this stage, that Uraba has extended its range.

John Bain, Forest Research

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