Kaliwatan sa krustaseo ang Stenoniscus pleonalis.^[1] Una ning gihulagway ni Aubert ug Gustave Frédéric Dollfus ni adtong 1890. Ang Stenoniscus pleonalis sakop sa kahenera nga Stenoniscus, ug kabanay nga Stenoniscidae.^[1][2]

Kini nga matang hayop na sabwag sa:

• amihanang Kadagatang Atlantiko
• Bermuda
• Bulgaria
• Krowasya
• Pransiya
• Gresya
• Italya
• Corse

Ang kaliwatan gibahinbahin ngadto sa matang nga nahiubos:^[1]

• S. p. hellenicus
• S. p. pleonalis

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: 54335765. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Boyko C.B, Bruce N.L., Hadfield K.A., Merrin K.L., Ota Y., Poore G.C.B., Taiti S., Schotte M. & Wilson G.D.F. (eds). (2019). WoRMS Isopoda: World Marine, Freshwater and Terrestrial Isopod Crustaceans database (version 2019-03-05). 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.