Comment by antiterra

Some moths have mandibles, but most sorts don’t. Further, ‘nectar larceny’ behavior is still the subject of study and appears to possibly help pollination or have a neutral effect in many cases. There also seems to be an indication that some plants are perforated by bees and that certain moths reuse those holes for access to nectar.

As another curiosity, I believe the death’s head hawk moth (as ‘made famous’ by The Silence of the Lambs) can disguise itself as a bee via scent and just take honey from a beehive.