October 23, 2010
Photograph by Martin Oeggerli, National Geographic
This Month in Photo of the Day: National Geographic Magazine Features
Perched on the tendril of a Passiflora plant, the egg of the Julia heliconian butterfly may be safe from hungry ants. This species lays its eggs almost exclusively on this plant's twisted vines.
See more photos from the May 2010 story “The Beauty of Insect Eggs.”
Explore more patterns in nature photos »