Questions & Answers about Если оса летает рядом, лучше не махать руками.
This is a very common motion-verb question.
- летать = to fly around, fly repeatedly, buzz about, move in different directions
- лететь = to be flying in one direction, to be in flight toward somewhere
In this sentence, the wasp is not imagined as flying from point A to point B. It is buzzing around nearby, so летает is the natural choice.
So:
- оса летает рядом = a wasp is flying/buzzing around nearby
- оса летит would sound more like the wasp is flying in a specific direction
Here рядом means nearby / close by.
In this sentence, it works as an adverb:
- Если оса летает рядом = If a wasp is flying nearby
You may also see рядом с + instrumental, meaning next to something:
- рядом с домом = next to the house
But in your sentence, there is no noun after it, so it simply means nearby.