The following species are recognised: •
Pseudostomum arenarium Meixner, 1938 •
Pseudostomum californicum Karling, 1962 •
Pseudostomum coecum (Graff, 1882) •
Pseudostomum gracilis Westblad, 1955 •
Pseudostomum klostermanni (Graff, 1874) •
Pseudostomum quadrioculatum (Leuckart, 1847) == References ==