twenty-Hydroxyecdysone can be a By natural means happening ecdysteroid hormone which controls the ecdysis (moulting) and metamorphosis of arthropods. It can be thus One of the more common moulting hormones in insects, crabs, etc. It is also a phytoecdysteroid made by many vegetation, which include Cyanotis vaga, Ajuga turkestanica and Rhaponticum c