luna moth

or Luna moth

Origin of luna moth

An Americanism dating back to 1850–55
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British Dictionary definitions for luna moth

luna moth

noun
  1. a large American saturniid moth, Tropaea (or Actias) luna, having light green wings with a yellow crescent-shaped marking on each forewing

Word Origin for luna moth

C19: so named from the markings on its wings
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