There are innumerable insects in this world. Entomologists might be in a position to answer your question precisely. From my own observations in the nature, I can tell you that some of the insects (ants, bees) and some animals can definitely communicate with each other. Google search also confirms my observations.

Difficult question... No one in this world has studied "all insects" so I guess no one is able to give a correct answer.

David, good question; however, you need an entomologist to explain this phenomenon.

I think they do. Insect of the same class communicate with themselves I.e bee-bee and cockroach to cockroach .Not bee-beetle.Lols

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Of course Subir

If they are organised in groups, there must be a way of communication between them, that is my opinion.

this article will explain somethings

J Chem Ecol. 2014 May;40(5):411. doi: 10.1007/s10886-014-0442-0.

From insect communication to bacterial communication.

Schulz S1.

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Good and interesting question

I agree with Hijaz Ahmad