a moth having wings mostly devoid of scales and transparent, especially any of the family Aegeriidae, many species of which are injurious to plants.
Origin of clearwing
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012