Kaliwatan sa bakukangon ang Agathidium penultimum.^[1] Una ning gihulagway ni Angelini ug Cooter ni adtong 2003.^[2] Ang Agathidium penultimum sakop sa kahenera nga Agathidium, ug kabanay nga Leiodidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Pangmasang Republika sa Tsina
  • Hubei Sheng

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: 53257091. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Angelini, F. & J. Cooter. (2003) New data and species of Agathidiini (Coleoptera, Leiodidae) from China. , Annali del Museo Civico di Storia Naturale "Giacomo Doria", 95: 1-33.
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.