To refer to this article use this url: http://www.zoologischemededelingen.nl/83/nr04/a33
Acknowledgements
For the loan of specimens and literature, Dr G. Oliver and Mrs H. Wood of the NMW are acknowledged, Dr Stephen K. Donovan for critically reading the manuscript, two reviewers who improved the manuscript with their comments, Dr John J. van Aartsen for stimulating discussions, Gab Mulder and Bart van Heugten for practical help, and Dr René W.R.J. Dekker for providing the facilities.
Received: 15.x.2008
Accepted: 6.vii.2009
Edited: L.P. van Ofwegen