The nomadic scuttlecrab split from its ancestor, the stickyball fortresscrab. To keep predators guessing they will constantly move around never staying in once place for more than a day or two. They build silk 'tents' which are left behind when they leave. It no longer depends upon the superstickyballs for its dwellings. Most of them are made of leaves and small sticks.
There is still an alpha female but she only leads the group to where they should migrate. All females can reproduce now rather than just one female. The males are also more abundant and are generally larger than them with large claws to fend off lizardworms.
When crossing rivers, they will make a raft out of their bodies and float across the river. They keeps the silk eggs in the middle where its dry however the silk are generally water proof. During its' mating season the males will arm wrestle to see who can mate with the females. When the many eggs hatch they will join the nomadic colony. If the colony gets too big an new alpha female will be chosen and half will follow her. Usually her own offspring.