The Mordian butterfly is an insect.
When Quark and Natima Lang first used a holosuite program recreating the planet Rhymus Major, a Mordian butterfly became stuck on Lang's nose. (DS9 episode: "Profit and Loss")
Julian Bashir was familiar with Mordian butterflies. (DS9 - Mission Gamma novel: Cathedral)
External link[]
- Mordian butterfly article at Memory Alpha, the wiki for canon Star Trek.