About the Authors
School of Animal, Plant, and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
Department of Zoology, The University of Melbourne, Melbourne, Australia
School of Biological and Conservation Sciences, University of KwaZulu Natal, Pietermaritzburg, South Africa
Department of Sciences, Museum Victoria, Melbourne, Australia
The authors have declared that no competing interests exist.
DSF and AM did all field work and spectroradiometry, discussed the results, and fine-tuned the manuscript. AM did phylogenetic analysis of Genbank sequence data, and wrote a program automating visual modelling. DSF analysed spectral data, did comparative analysis, and wrote the paper.