Butterfly

Butterflies were Earth lepidopterans.

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. (PROSE: K9 and the Missing Planet)

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

One of the rooms in the TARDIS contained thousands of butterflies. (PROSE: Vampire Science)

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

Butterflies existed on Skaro prior to the Thousand Year War. (AUDIO: Corruption)

An unnamed planet was home to large butterfly-like creatures. The sons of Grekk, who also lived there, viewed them and all the other intelligent life forms on the planet as vermin, and had vowed to exterminate them all. When they captured any of the butterflies, they clipped their wings before imprisoning them. (PROSE: The Sons of Grekk)