Julius Caesar..text

Hey, um… I’m reading Julius Caesar, and came across this:

“Cassius:… But for your words, they rob the Hybla bees and leave them honeyless.
Antony: Not stingless too.” Act V, scene i, line 30 or so.

What does Antony mean by that? People said it’s a “burn”, supposedly. Does it mean that Antony robs the stings of the bees too? How is that… offensive? (since it’s a series of insults?)

Thanks =)