Kaliwatan sa muraghalas ang Atractus attenuates^[1]. Una ning gihulagway ni Myers ug Walter E. Schargel ni adtong 2006.^[2] Ang Atractus attenuates sakop sa kahenera nga Atractus, ug kabanay nga Dipsadidae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Colombia

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: 28889501. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Passos, Paulo, Juan C. Arredondo, Ronaldo Fernandes and John D. Lynch (2009) Three new Atractus (Serpentes: Dipsadidae) from the Andes of Colombia. , Copeia 2009 (3): 425-436
3. ↑ Uetz P. & Hošek J. (2019). The Reptile Database (version Dec 2015). 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.