zygaenidhttp://www.oed.com/dictionary/zygaenid_n%3Ftab%3Dmeaning_and_usezygaenid, n. & adj.
First published 1921; not fully revised

zygaenidnoun & adjective

Zoology.
  1. 1913–
    a. n. A member of the family Zygænidæ, typified by the genus Zygæna; b. adj. belonging to the Zygænidæ.
    Stressed as zyˈgaenid.
    1. 1913
      The Zygaenid moth Procris geryon.
      Oxford University Gazette 954/1

Originally published as part of the entry for zygaena, n.

zygaena, n. was first published in 1921; not fully revised.