. Brood pheromone is a blend of 10 fatty acid methyl and ethyl esters extract- ablefromthelarvalcuticle(LeConteetal.1990)that hasbeenshowntoaffectasuiteofforagingbehaviors, leading to increased pollen intake and colony growth (Pankiw 2004; Pankiw et al. 2004, 2008; Sagili and Pankiw 2009