形态与蝴蝶相似，但多在夜间活动，体表覆盖着更多的绒毛。翅膀大多呈褐色或灰色，用作伪装。容易被光吸引，经常聚集在灯火附近。幼虫阶段会啃食树叶或农作物，有时会损害庄稼。
Although similar in shape to butterflies, they are generally active at night and have a hairier body. Their wings are usually brown or gray, serving as camouflage. They are easily attracted to light and often gather around lamps. During the larval stage, they feed on leaves and farming crops, sometimes causing damage.