About Ibycus rachelae Schilthuizen & T.-S.Liew, 2008
Ibycus rachelae, commonly known as the long-tailed slug or ninja slug, is a species of air-breathing semi-slugs that belongs to the family Helicarionidae. It earned the common name "ninja slug" from its ability to fire calcium carbonate harpoons called "love darts" at potential mates, to inject them with hormones. The discoverers originally planned to name this species I. felis, because its habit of curling its tail around its neck reminded them of a sleeping cat. After the love dart behavior was observed, they renamed it I. rachelae instead, naming it after Menno Schilthuizen's girlfriend. Ibycus rachelae is one of more than a hundred new species that were discovered in Borneo after 2007, and it was announced in a 2010 World Wide Fund for Nature report.
