title: Choristoneura fumiferana
context: The moths will emerge from the pupae within 8 to 12 days, during mid-June to August. Adult spruce budworm are medium-sized (15mm in length) and dichromatic, exhibiting gray and rust colors.[12] The wings have silvery patches and are 21mm to 30mm in wingspan.[11] Peak activity occurs during the later afternoon and early evening.[37] After emerging, the adults will mate and lay eggs in July or August.[11][38]
question: What is the wingspan of the eastern spruce budworm?
answers: 21mm to 30mm