Akkari, N.; Gilgado, J. D.; Ortuño, V. M.; Enghoff, H. Out of the Dark Void: Ommatoiulus longicornis N. Sp., a New Julid from Spain (Diplopoda, Julida) With Notes on Some Troglobiomorphic Traits in Millipedes. Zootaxa 2018, 4420, 415–429.