Drosophila mojavensis wrigleyi Mating (IMAGE) Max Planck Institute for Chemical Ecology Caption Male and female of Drosophila mojavensis wrigleyi during mating. In this subspecies, males advertise their presence by discharging a droplet of anal secretions in the vicinity of females. The droplet contains a sex pheromone that enhances female receptivity. Credit Benjamin Fabian, Max Planck Institute for Chemical Ecology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.