plume moth

from The Century Dictionary.

• noun One of the small delicate moths which compose the family Pterophoridæ (or Alucitidæ so called from the division of the wings into plume-like parts or feathery lobes.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun zoology Any one of numerous small, slender moths, belonging to the family Pterophoridae. Most of them have the wings deeply divided into two or more plumelike lobes. Some species are injurious to the grapevine.