Ecdysis is when an arthropod molts its exoskeleton. Molting is necessary. The arthropod exoskeleton is inflexible, so, for it to grow larger, arthropods must molt.
Earthworms in the class oligochaeta, which is in the phylum annelida. Ecdysis occurs in the phylum arthropoda. My guess is that earthworms' cuticles undergo a process closer to our skin's than ecdysis.
Arthropods molt (moult) in a process called ecdysis. It is necessary for growth because of the inflexibility of the exoskeleton. The old shell remnants are called exuviae. Note that the term 'anthropod' should not be confused with 'arthropod'; anthropods are humans or humanoids and do not moult in the canonic sense.
Since the external covering (exoskeleton) is inflexible, it's necessary for arthropods to periodically shed it (moult) in order to grow, a process called ecdysis.
Molting is the process of secreting new cuticle. It ends into ecdysis i.e. separating new and old cuticle and shedding old cuticle. It has 3 phases preparatory, ecdysis and post ecdysis. This process ends by eclosion i.e. final emergence out of old cuticle.[Ref: insects]
It is called Ecdysis or Molting.
The shedding of the exoskeleton in insects is called molting or ecdysis. This process allows the insect to grow larger and is essential for development and survival. During molting, the old exoskeleton is shed and a new, larger one is formed underneath.
Husk - Exuvia - Moult - Ecdysis .
During ecdysis the blood circulation is effected due it there may be a blockage between the arteries and veins and it also causes the death of the patient.
an arthropod sheds it old exoskeleton when it has grown to a point where it needs a larger exoskeleton. This process is called ecdysis.
I thik it is the shedding of skin undergo by snakes and other reptiles.
The technical term is 'sloughing' - the scientific term is 'ecdysis'
Moulting or ecdysis