Triboniophorus is a genus of air-breathing land slugs, terrestrial pulmonate gastropod molluscs in the family Athoracophoridae, the leaf-veined slugs.

Species Species within this genus include:MolluscaBase eds. (2023). MolluscaBase. Triboniophorus Humbert, 1863. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=818612 on 2023-12-08 Triboniophorus graeffei Humbert, 1863 – the red triangle slug – type speciesSolem A. 1959. Systematics of the land and fresh-water mollusca of the New Hebrides. Fieldiana Zoology, volume 43, number 1, Chicago Natural History Museum, page 45–46 Triboniophorus sp. nov. 'Kaputar', a fluorescent pink species, also known as Triboniophorus aff. graeffei incertae sedis Triboniophorus insularis

Triboniophorus brisbanensis Pfeiffer, 1900:http://www.environment.gov.au/cgi-bin/abrs/fauna/tree.pl?pstrVol=PULMONATA;pintMode=2;pintTaxa=2442#2442 accessed 20 February 2009 Synonym of Triboniophorus graeffei (anatomy at page 316.)

Description These slugs have two, not four, tentacles, and like other leaf-vein slugs they have an indented pattern on their dorsum which resembles the veins of a leaf.

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