中至大型蛾类,日间飞行,速度很快。喙发达,额角突起,下唇须向上伸,第三节向前伸,触角常向端部渐粗,末端通常有一个钩,有单眼,复眼大,少数种类复眼具毛,中足胫节有一对距,后足胫节有两对距,胫节很少有刺,前翅3A和2A分离,M2自中室下角附近伸出,有副室;后翅有3A,M2在中室处仅留痕迹,M1及R出自于中室顶角或具短柄,Sc基部游离,然后与中室有部分接触,接触部分不超过中室之半。 Medium to large moths, flying during the day, very fast. Beak developed, the forehead protruding, the lower lip to be upward, the third forward, the tentacles tend to end gradually thick, the end usually has a hook, a single eye, compound eye large, a few types of complex eyes with hair, tibia in the midfoot have a Right and left hind tibia, there are two pairs of tibia, tibia few thorns, wing 3A and 2A separation, M2 from the middle of the lower corner of the chamber extended, with the deputy room; rear wing with 3A, M2 in the room only Marks, M1 and R come from the mid-chamber apex or short stalk, Sc base free, and then part of the contact with the chamber, the contact part does not exceed half of the chamber.