When a large number of moths appear in one place, they are suspected of being a "swarm of pests," but a similar gathering of butterflies is generally regarded as a "marvelous sight," except perhaps by a few farmers who hate them for the damage they do to crops. People even raise them on special butterfly farms.
蛾類群集，常被懷疑是「害蟲大發生」，同樣的情形發生在蝴蝶身上，除了少數農民因為作物損失而恨之入骨，蝴蝶成群結伴，通常就被視為「奇觀」，人們還喜歡設置蝴蝶園專養蝴蝶。