Kaliwatan sa bakukangon ang Phytoscaphus triangularis.^[1] Una ning gihulagway ni Olivier ni adtong 1807.^[2] Ang Phytoscaphus triangularis sakop sa kahenera nga Phytoscaphus, ug kabanay nga Curculionidae.^[1][3] 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: 54179907. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Olivier A.G. (1807) Entomologie, ou Histoire Naturelle des Insectes, avec leurs caracteres generiques et specifiques,leur description, leur synonymie, et leur figure enluminee. Coleopteres , Vol. 5. Paris: Desray. 612 pp.
3. ↑ Yunakov N. (2019). 3i Curculio: 3i taxonomic databases, Curculionidae, subfamily Entiminae (version Jan 2019). 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.