Schmelz, Rüdiger M., and Rut Collado. “Enchytraeidae (Oligochaeta, Annelida) from a Field Site in Portugal, With the Description of Five New Species and a Redescription of Enchylea heteroducta Nielsen & Christensen, 1963”. Zootaxa 3647, no. 2 (May 9, 2013): 307–328. Accessed May 2, 2025. https://www.mapress.com/zt/article/view/zootaxa.3647.2.4.