Ular ini berukuran kecil, panjangnya antara 50 sampai 90 centimeter.<ref name="Snakes of Thailand">[{{Cite web |url=http://www.siam-info.de/english/snakes_homalopsinae.html#Erpeton%20tentaculum |title=www.siam-info.com<!-- Judul yang dihasilkan bot -->] |access-date=2015-05-29 |archive-date=2012-10-05 |archive-url=https://web.archive.org/web/20121005001203/http://www.siam-info.de/english/snakes_homalopsinae.html#Erpeton%20tentaculum |dead-url=yes }}</ref><ref name="Toronto Zoo">{{Cite web |url=http://www.torontozoo.com/Animals/details.asp?AnimalId=580 |title=Salinan arsip |access-date=2015-05-29 |archive-date=2010-06-09 |archive-url=https://web.archive.org/web/20100609002247/http://www.torontozoo.com/animals/details.asp?AnimalId=580 |dead-url=yes }}</ref> Warna tubuhnya kelabu kehitaman atau cokelat dengan pola-pola seperti belang berwarna krem.
