psiloetron, Gastromyzon Tan [H. H.] 2006:126, Pl. 14A; figs. 71-73 [The Borneo Suckers; ref. 28716] Lalut (= Sungai) Birai next to Lalut Birai Field Sta., feeder stream to Enggeng Bio which drains into the Bahau River, 2°52.58'N, 115°49.19'E, Kayan basin, Kalimantan Timur, Borneo, elevation 350 meters. Holotype: MZB 9348. Paratypes: MZB 9349 (7); RMNH 7635 (5), 7637 (19), 7638 (1), 7639 (3), 7794 (4); ZRC 47062 (7), 47063 (18). •Valid as Gastromyzon psiloetron Tan 2006 -- (Kottelat 2012:63 [ref. 32367], Kottelat 2013:193 [ref. 32989]). Current status: Valid as Gastromyzon psiloetron Tan 2006. Gastromyzontidae. Distribution: Upper Kayan and Mahakam River basins, Kalimantan Timur, and the upper Kapuas River basin, Kalimantan Barat, Borneo, Indonesia. Habitat: freshwater.