In [i]Paradise Lost[/i] when Lucifer fell, he was disheveled, broken, defeated and lost. It was Beelzebub who gave him an iconic war pep-talk so to speak, to fight back, rise above, to rise once again against his father.
Because of this, there are multiple allusions to him in [i]Lord of the Flies[/i] as the the constant and ever growing temptation to go against social norms and to revert back into savage ways. He is the flies.
Beezlebub is often portrayed as a mass of insects and darkness.