Monosiga marina

dear
I uploaded this Monosiga marina.
species identified using Throndsen, Hasle and Tangen "Phytoplankton of Norwegian coastal waters" p. 282.
But I did not use the variety name. M. marina var. marina. My argument is that we have no idea about varietes contra real species and hence I exclude varieties.
Has anyone comments on this (or the identification)?
b.r.
Fredrik