Giant Pink Slug (Triboniophorus aff. graeffei)
These herbivorous 8-inch long slugs were recently found in New South Wales, Australia on Mt. Kaputar.
According to the article, they like to come out at night or after it rains. This population of slugs is unique to the mountaintop on which they were found.
Phylogeny:
Animalia-Mollusca-Gastropoda-Elasmognatha-Athoacophoroidea-Athoracophoridae-Triboniophorous-aff. (short for affinis (related to)) graeffei
Image Source
What if this was cteno?