Sendra, Alberto, Vicente M. Ortuño, Agustín Moreno, Sergio Montagud, and Santiago Teruel. 2006. “Gollumjapyx smeagol Gen. n., Sp. N., an Enigmatic Hypogean Japygid (Diplura: Japygidae) from the Eastern Iberian Peninsula”. Zootaxa 1372 (1). Auckland, New Zealand:35–52. https://doi.org/10.11646/zootaxa.1372.1.4.