Adipokinetic hormone II (Locusta migratoria) (Lom-AKH-II), an insect adipokinetic hormone (AKH), elevates fat body cAMP levels in vitro. These hormones (AKHs) regulate the mobilization of carbohydrates and lipids from fat body reserves for flight, by activating AKH receptor(s) that stimulate cAMP production and glycogen phosphorylase through the stimulatory guanine nucleotide-binding protein (Gs) [1] [3].