ACKNOWLEDGMENTS

We sincerely thank the curators and other staff of the following museums for access to specimens over decades; the British Museum of Natural History, London; the Finnish Museum of Natural History, Helsinki; the Zoological Museum, Natural History Museum of Denmark, Copenhagen; Koninklijk Museum voor Midden-Afrika, Tervuren, and the Museum of Evolution at Uppsala University. We would also like to thank R. Portela-Miguez, A. Currant, A. Karme, and I. Corfe for their help. Financial support for this study was provided to EH by the Alfred Kordelin Foundation. The study visits of EH (GB-TAF-5655 and DK-TAF-5605) received support from the SYNTHESYS Project (http://www.synthesys.info/), which is financed by European Community Research Infrastructure Action under the FP6 "Structuring the European Research Area" Programme.