Kaliwatan sa insekto ang Petalocnemis grossa.^[1] Una ning gihulagway ni Rauno E. Linnavuori ni adtong 1978.^[2] Ang Petalocnemis grossa sakop sa kahenera nga Petalocnemis, ug kabanay nga Coreidae.^[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: 46719188. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Linnavuori (1978) Hemiptera of the Sudan, with remarks on some species of the adjacent countries 6. Aradidae, Meziridae, Aneuridae, Pyrrhocoridae, Stenocephalidae, Coreidae, Alydidae, Rhopalidae, Lygaeidae. , Acta Zoologica Fennica (Acta Zool.Fenn.) 153:1-108
3. ↑ CoreoideaSF Team (2019). SF Coreoidea: Coreoidea Species File (version 5.0, Jun 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.