A particular insect often means that certain qualities of that insect are significant to you right now.
Think of what that insect symbolizes to you, and the standard ideas about the insect. For example, ants are usually thought of as industrious and well-organized.
Notice what the insect is doing in the dream, and how they are doing it. For example, a bee that is gathering nectar might represent enjoying the sweeter things in life, whereas an angry bee buzzing around your head may represent a nuisance or threat.