Bamber, R.N.; El Nagar, A.; Arango, C.P. (Eds) (2024). Pycnobase: World Pycnogonida Database.
Nymphon gracile Schimkewitsch, 1890. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=379197 on 2024-11-26