Species and morphological information pertaining to Pseudo-nitzschia delicatissima complex including two strains of Pseudo-nitzschia hallegraeffii sp. nov. established in this study.

Note: n = number of specimens observed; data are given as minimum and maximum range (above) and mean ± SD (below); nd = no data; # = no. poroids wide x no. poroids high–valvocopula pattern; followed by band II pattern.