H ow much we are afraid of insects can be judged by the witty saying We all are brave until we realise cockroaches can fly. Trust me, nobody loves insects, and botfly adds another reason to the list. The botfly, also known as oestridae, warble fly, or gadfly, is pretty harmless, but the larvae are pretty heinous since they love to dwell on the human body. Eww! This is super gross!