This hormone, released from cells in the corpora cardiaca, causes release of diglycerides from the fat body and stimulation of muscles to use these diglycerides as an energy source during energy-demanding processes. Expressed in corpora cardiaca (CC), corpora allata (CA) and gnathal ganglion (GNG) (at protein level). Expression in CC and CA detected in all animals, expression in GNG detected in few animals (at protein level). Not expressed in antennal lobe (AL) (at protein level). Belongs to the AKH/HRTH/RPCH family. Further mature peptides might exist.