Trypoxylon atratus FABRICIUS 1804; Psenulus brevitarsis MERISUO 1937; Psen chevrieri TOURNIER 1899; Psen haemorrhoidalis COSTA 1871; Psen minutus TOURNIER 1899; Psen montanus COSTA 1861; Psen nigricornis TOURNIER 1899; Psen pygmaeus TOURNIER 1899; Psenulus rubicola HARTTIG 1931
There are approximately 100 species in this genus worldwide. Lomholdt (1984) states that there are only seven species in Europe, but Bitsch et al. (2001) list ten, although one of these, P. hidalgo, was only described in 1990.Three species have been recorded in Britain.
This is the most widespread of the three species of Psenulus, being found in England as far north as North Yorkshire, Cumbria and Lancashire, as well as southern and eastern parts of Wales and the West Country. Richards (1980) also cites eastern Ireland, although no modern records have been forthcoming as a result of this present atlas project. As with P. concolor, it is most widely recorded in the south-east of England.
It is also widespread in Scandinavia (Lomholdt 1984) and found through the temperate Palaearctic to China, Korea and Japan, as well as North America and Morocco (Bitsch et al. 2001).