Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#40388
Apical Droplets - Culex quinquefasciatus

Apical Droplets - Culex quinquefasciatus
Vero Beach, Indian River County, Florida, USA
August 31, 2005
This shows the apical droplets that form on Culex eggs, mostly lipid material but containing a volatile pheromone. This pheromone attracts other gravid females to the water to oviposit. The compound was identified as 5R,6S-6-acetoxy-5-hexadecanolide.
http://www.pherobase.com/database/compound/compounds-detail-5R6S-6-acetoxy-5-hexadecanolide.php