"Voltrons" is not a technical term, but I kind of feel like it should be.
Especially for formations like this.
Thread below, although not quite a #DeepDive.
More or less, they're doing the same thing for reasons/benefits that aren't entirely clear.
They don't join up like slime moulds, but the idea isn't that different.
The most obvious one is dehydration. If you're small, water can leave your body faster...so the journey is more dangerous
There's a second, more interesting, one though
Parasites!
The larger the group, the safer the larvae.
There's benefits to forming a large group like this, and acting as one!
Voltron also comes together to become more powerful!
Also, when I see pictures/videos like this, I always imagine the bugs saying the lines in the video below.