Actinocyclus tenuissimus Cleve, 1878

Lobban, Christopher S. & Witkowski, Andrzej, 2023, Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist, Micronesica 2023 (2), pp. 1-75 : 27

Actinocyclus tenuissimus Cleve

Reported by Lobban et al. (2012), still a valid species but in view of discussion in J.S. Park et al. (2022), we reconsidered the specimens. While the size and stria density are in the range of A. tenuissimus , the central area and instinct interfascicular rows are characteristic of A. subtilis (Gregory) Ralfs , to which we now refer all our Guam specimens (see also Lobban & Tharngan in prep.).