Compound Eyes Jutsu

Linking his senses to his insects, he gains a technique known as Compound Eyes jutsu, where he sees via the compound eyes of his own insects. This means that most visual genjutsu will fail, because casting visual genjutsu on him wouldn't work (as they're looking at the eyes of the insects), and also because they don't know how he sees things, and it is therefore hard for them to impose a "realistic" genjutsu which can confuse the user.