aphelocheilus, Protomyzon Inger [R. F.] & Chin [P. K.] 1962:110, Fig. 53 [Fieldiana Zoology v. 45; ref. 12303] Sungei Kaingeran, Tambunan District, northern Borneo. Holotype: FMNH 68166. Paratypes: CAS 56015 [ex FMNH 68167] (3), FMNH 68167 (orig. 13, now 9), N. Borneo coll. [ex FMNH 68167] (1). Type catalog: Ibarra & Stewart 1987:70 [ref. 12367] as FMNH 9 paratypes. •Valid as Protomyzon aphelocheilus Inger & Chin 1962 -- (Kottelat et al. 1993:56 [ref. 23448], Doi 1997:19 [ref. 22832], Martin-Smith & Tan 1998:587 [ref. 23647] as aphelochilus, Kottelat 2004:301 [ref. 27994], Kottelat 2012:68 [ref. 32367], Kottelat 2012:68 [ref. 32367], Wilkinson & Tan 2018:601 [ref. 36226]). Current status: Valid as Protomyzon aphelocheilus Inger & Chin 1962. Gastromyzontidae. Distribution: Northern Borneo. Habitat: freshwater.