- a moth having wings mostly devoid of scales and transparent, especially any of the family Aegeriidae, many species of which are injurious to plants.
- any moth of the family Sesiidae (or Aegeriidae), characterized by the absence of scales from the greater part of the wings. They are day-flying and some, such as the hornet clearwing (Sesia apiformis), resemble wasps and other hymenopterans
