If someone helps, the process of trying to break through after rest is omitted, because the wings are not strong enough, they will gradually be destroyed by nature and die soon.
According to the law of activities, the first-instar larvae of many social species feed and inhabit in the same way (the first and second instars are obvious), and they gather together to feed or inhabit, such as Papilio.
Some butterflies, such as the larvae of nettle butterflies, often spin silk among nettles in dozens of groups, hiding in them like spiders to resist foreign enemies, and at the same time foraging and inhabiting, which is quite regular. The habitat of butterfly larvae is generally hidden, so it is not easy to find individual larvae in the wild.
Baidu Encyclopedia-Butterfly