1. Centre for Behavioural and Physiological Ecology, Zoology University of New England Armidale NSW 2351 Australia
2. Insect Ecology Lab, Natural History Museum, School of Environmental and Rural Science University of New England Armidale NSW 2351 Australia
3. Asuansi Agric Statione, Box 520 Cape Coast Ghana
4. Agronomy and Soil Science, School of Environmental and Rural Science University of New England Armidale NSW 2351 Australia
5. School of Science and Technology University of New England Armidale NSW 2351 Australia