The appearance of flying insects are wings, maybe antennae's, and/or stingers. They often make a buzzing noise like bees, or flies and their wings can also make noises too. Flying insects can live in many different habitats, some live near water, some live near land or even is hot humid areas and can eat pollen or nectar, decaying fruits and vegetables, rotting animal matter and much more.
hope this is okay, i'm still tired so i had to stop and think halfway through lol