Inside view of valve (SEM)
Size: Diameter = 4-9,5 µm
Note: It has been confused with C. caspia in the past (Håkansson et al. 1993). Found in the inner part of Gullmarsfjorden and Idefjorden.
Similar species: Cyclotella atomus
Hasle, G. R. 1962. Three Cyclotella species from marine localities studied in the light and electron microscopes. Nova Hedwigia. 4: 299-307.
Håkansson, H., Hajdu, S., Snoeijs, P. & Loginova, L. 1993. Cyclotella hakanssoniae Wendker and its relationships to C. caspia Grunow and other similar brackish water Cyclotella species. Diatom Research. 8: 333-347.
Prasad, A. K. S. K., Nienow, J.A. & Livingston, R.J. 1990. The genus Cyclotella (Bacillariophyta) in Choctawhatchee Bay, Florida, with special reference to C. striata and C. choctawhatcheeana sp. nov. Phycologia. 29: 418-436.