Clifden nonpareil

 
Pronunciation: /klɪfd(ə)nˈnɒnpərɛl/

noun

  • a large European moth of mostly subdued coloration, with a pale blue band on the underwing.
    • Catocala fraxini, family Noctuidae

Origin:

mid 18th century: from Clifden (now Cliveden), the name of a village in Buckinghamshire, England, and nonpareil