Kaliwatan sa bakukangon ang Probastactes quadrispinosus.^[1] Una ning gihulagway ni Juan Brèthes ni adtong 1910. Ang Probastactes quadrispinosus sakop sa kahenera nga Probastactes, ug kabanay nga Curculionidae.^[1][2] 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: 30124304. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Alonso-Zarazaga M.A. & Lyal C.H.C. (authors), Sánchez-Ruiz M. (technical editor). (2019). WTaxa: Electronic Catalogue of Weevil names (Curculionoidea) (version Oct 2016). 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.