Neuropeptide that triggers the performance of ecdysis behaviors at the end of a molt. It triggers adult behavior patterns: larval, pupal and adult ecdysis, and plasticization during the molt. Expressed in a single pair of brain neurons which extend their processes the entire length of the central nervous system and also to the corpora cardiaca portion of the ring gland. These cells show massive depletion of immunoreactive Eh at ecdysis. Belongs to the insect eclosion hormone family.