Menoptera

The Menoptera (alternatively spelt Menoptra) were one advanced species of the planet Vortis.

Biology
Menoptra resembled Human-sized humanoid butterflies or moths who could fly.

Technology
The Menoptra had weapons such as the Isop-tope device, a living cell destructor (DW: The Web Planet), and also a fleet of spacecraft. (MA: Twilight of the Gods).

History
The Menoptra were native to Vortis, but due to the Animus' invasion of the planet via mind control of the Zarbi, they fled to Vortis' moon, Pictos. Eventually, they warred against the Animus and the Zarbi with the Doctor, Barbara Wright, Ian Chesterton and Vicki, eventually defeating the Animus, leaving the inhabitants of Vortis to resolve their differences peacefully. (DW: The Web Planet)

Several years later, Vortis ended up in the nearby Rhumos system, home of a warring race, so the planet becomes disputed territory, the Menoptra being made slaves, a seed of the Animus surviving and building up a slave force from the Rhumon dead not helping. Eventually, the Doctor, Jamie McCrimmon and Victoria Waterfield helped the Menoptra defeast the Animus again, and made the Rhumons declare Vortis neutral ground. (MA: Twilight of the Gods)

Behind the Scenes
Production information for the television story The Web Planet originally spelled the name Menoptra. The novelization and subsequent stories, however, have used the name Menoptera. The latter spelling had caught on.