| Citation | Bamber, R.N. and A. El Nagar, 2007 Pycnobase: Pycnogonida World Database. Available online at http://www.marinespecies.org/pycnobase/ | |
| Ref. | 8434 Bamber, R.N. and A. El Nagar, 2007 | |
| Page | ||
| Named Used as Valid | Nymphon improcerum | |
| Comment | http://wwwmarinespeciesorg/pycnobase/aphiaphp?p=specdetails&id=239947 | |
| Locality | Pacific Ocean (off Kisami, Honshu, Sagami Bay, Japan) | |
| Distribution |