This taxon is Not Recognised as a species by BirdLife International.
Nectarinia afra, N. prigoginei, N. stuhlmanni and N. ludovicensis (Sibley and Monroe 1990, 1993) have been lumped into N. afra following Dowsett and Forbes-Watson (1993).
BirdLife International (2016) Species factsheet: Nectarinia stuhlmanni. Downloaded from http://www.birdlife.org on 07/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 07/12/2016.