Hydroxydanaidal pheromone, conceptual image Hydroxydanaidal pheromone. A pheromone produced by male milkweed butterflies that attracts female butterflies., by Wladimir BulgarSCIENCE PHOTO LIBRARY Stock Photo - Afloimages
Hydroxydanaidal pheromone. A pheromone produced by male milkweed butterflies that attracts female butterflies., by Wladimir Bulgar/SCIENCE PHOTO LIBRARY