Spiophanes bombyx is widely spread across the Belgian part of the North Sea (BPNS) and reaches a high frequency of occurrence in all areas. A low distribution frequency was only observed in the eastern coastal zone in the 1994-2001 period. In addition to its wide distribution pattern S. bombyx was mainly found in high densities (1976-1986 period: up to 1,500 ind./m2; 1994-2001 period: up to
12,000 ind./m2). In short, S. bombyx is one of the most common species on the BPNS.
Degraer, S.; Wittoeck, J.; Appeltans, W.; Cooreman, K.; Deprez, T.; Hillewaert, H.; Hostens, K.; Mees, J.; Vanden Berghe, E.; Vincx, M. (2006). The macrobenthos atlas of the Belgian part of the North Sea. Belgian Science Policy. D/2005/1191/3. ISBN 90-810081-6-1. 164 pp. (look up in IMIS)