Kaliwatan sa bakukangon ang Agathidium difforme.^[1] Una ning gihulagway ni Leconte, J. L. ni adtong 1850.^[2] Ang Agathidium difforme sakop sa kahenera nga Agathidium, ug kabanay nga Leiodidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Kanada
  • Alberta (lalawigan)
  • British Columbia
  • New Brunswick (lalawigan)
  • Newfoundland and Labrador
  • Nova Scotia
  • Ontario (lalawigan)
  • Québec (lalawigan)
  • Saskatchewan
  • Yukon (lalawigan)
• Tinípong Bángsà
  • Alaska
  • California
  • Maine (estado)
  • Montana (estado)
  • New Hampshire
  • Nevada (estado)
  • New York (estado)
  • Oregon

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: 53256697. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ LeConte, J. L. (1850) General remarks upon the Coleoptera of Lake Superior, pp. 201-242. In: Agassiz, J. L. R. & J. E. Cabot. Lake Superior: its physical character, vegetation, and animals, compared with those of other and similar regions. Ch. IV. , Gould, Kendall and Lincoln, Boston. x + 2 + 428 pp., 1 map, pls. 1-8.
3. ↑ Newton A.F. (2019). StaphBase: Staphyliniformia world catalog database (version Nov 2018). 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.