Superworms aka king mealworms
While superworms look like large sized mealworms, they are not mealworms but an entirely different species. Mealworms can only grow to a maximum size of slightly more than 1 inch and never reach the size of superworms.
Superworms can be kept in exactly the same
way as mealworms except they need live more
spaced out. If too overcrowded, they can attack one another and especially
those that just moulted (shedding outer hard skin).