Acknowledgements
We thank Rocio Pérez-Barrales for donating plants for this study and help with transporting them. We also thank Bianca Tenea for vital work on data collection for the observations of behaviour. Field work and plant rearing on the University Campus benefitted from technical assistance from Rob Fowler and Crispin Holloway. CRM was financially supported by a scholarship from the School of Life Sciences at University of Sussex. Further financial support came from the European Union’s Horizon 2020 programme under the Marie Sklodowska-Curie grant agreement No 706365 to MCC.