Acentropus

…the aquatic snout moth (Acentropus) some females are wingless, while some females and males are winged. There are eight main wing veins, each with a characteristic pattern. These are usually designated according to the modified Comstock-Needham system. The names of the veins (with their symbols in parentheses) and the…

The freshwater larvae of Acentropus occur throughout the world, feeding on water plants and either breathing through their skin and tracheal gills or obtaining oxygen from the plants.