This species was reported from a rural site in the north of England (Bagnall, 1922), together with the similar Macrostemodesmus palicola which certainly occurs there. Eumastigonodesmus boncii has been looked for and not been found subsequently at the same site, nor elsewhere in the UK. The record is now regarded as erroneous, especially in view of the fact that Bagnall did not find a male and the species appears to be a Pyrenean endemic. It is not included in the latest checklist for the UK (Lee, 2006).