introrsus, Gastromyzon Tan [H. H.] 2006:72, Pl. 10D; figs. 30-32 [The Borneo Suckers; ref. 28716] Mile 1 from Keningau to Crocker Range National Park HQ, Padas basin, 5°21.206'N, 116°07.532'E, Sungai Agudon, Keningau, Sabah, East Malaysia, elevation 395 meters. Holotype: MUS uncat. Paratypes: FMNH 99345 (6), 99354 (3); MUS (12); USNM 361818 (1), 361922 (1); ZRC 47001 (12). •Valid as Gastromyzon introrsus Tan 2006 -- (Kottelat 2012:63 [ref. 32367], Kottelat 2013:193 [ref. 32989]). Current status: Valid as Gastromyzon introrsus Tan 2006. Gastromyzontidae. Distribution: Padas and Labuk River basins, Malaysia. Habitat: freshwater.