Typový druh
Ungusurculus riauensis Schwarzhans & Møller, 2007.
Původní popis
Schwarzhans, W. & Møller, P. R. 2007. Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-west Pacific. Part III. *Beaglichthys, Brosmolus, Monothrix* and eight new genera with description of 20 new species. The Beagle, Records of the Museums and Art Galleries of the Northern Territory v. 23: 29-110.
Použitá literatura
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2026. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.