Butterfly

Butterflies were Earth lepidopterids.

K9 once encountered butterflies on an unnamed planet in another dimension, partially inhabited by ex-Tellac miners. They lived alongside other Earth animals from widely varying periods of evolutionary history. Unlike most species of butterfly on modern Earth, however, these had a wingspan of about ten feet, as many extinct species did on Earth in the prehistoric past. (AK9: K9 and the Missing Planet)

Romana joked to Rohm-Dutt that she had been catching butterflies in the swamps of Delta III. (DW: The Power of Kroll)

One of the rooms in The Doctor's TARDIS contained thousands of butterflies. (EDA: Vampire Science)

The Menoptera resembled giant butterflies. (DW: The Web Planet)