Cover image Bicyclus anynana butterflies mating on maize leaves. The female, larger than the male, is on the right side of the picture. Photographer: Michaël Beaulieu. This image supports the paper “Reproducing butterflies do not increase antioxidant intake when they could benefit the most from them” by Beaulieu et al. published in Biology Letters (http://dx.doi.org/10.1098/rsbl.2015.0941).