This work had been funded through an Elise-Richter grant from the Austrian Science Foundation (FWF) to Andrea Grill. We thank Elena Haeler, Claudia Huber, Sabine Fischer, Carol Resch and Léon Raijmann for help with the rearing of Maniola butterflies and three anonymous referees for their comments.
Received: 9 August 2012
Revised and accepted: 18 December 2012
Published online: 28 February 2013
Editor: J.C. Biesmeijer