These are images of Bicyclus anynana butterflies mating -- the larger animal is the female. Note that there are two pages. The Proc. Roy. Soc. B is free to use any of these images as cover art to accompany the following article in press:
Costanzo, K. and A. Monteiro (in press). The use of chemical and visual cues in female choice in the butterfly Bicyclus anynanas. Proceedings of the Royal Society, B.
Images should be credited to W. H. Piel, © 2005.
Caution – clicking on a thumbnail will view a scaled image with a raw size of 3000 x 2000 pixels, which is large and slow to load.