Kaliwatan sa bakukangon ang Cybister nigrescens.^[1] Una ning gihulagway ni Gschwendtner ni adtong 1933.^[2] Ang Cybister nigrescens sakop sa kahenera nga Cybister, ug kabanay nga Dytiscidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Aprika

Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 8818085. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Nilsson, Anders N. (2001) , World Catalogue of Insects, volume 3: Dytiscidae (Coleoptera)
3. ↑ Tom Orrell (custodian), Dave Nicolson (ed). (2019). ITIS Global: The Integrated Taxonomic Information System (version Jun 2017). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.