1. Bio‐Protection Research Centre, PO Box 84, Lincoln University 7647, Canterbury, New Zealand
2. Department of Ecology, Faculty of Agriculture and Life Sciences, PO Box 84, Lincoln University 7647, Canterbury, New Zealand
3. Biosecurity Group, AgResearch, Private Bag 4749, Christchurch 8140, New Zealand
4. Entomology Research Museum, PO Box 84, Lincoln University, Lincoln 7647, New Zealand