Compare Rhoicosphenia stoermeri
Rhoicosphenia stoermeri is longer and wider than reports for R. abbreviata. The most distinct features are the broadly spaced raphe ends of the raphe valve and panduriform central area, features absent in other species of Rhoicosphenia.
LM scalebar = 10 µm
Length Range
25-84 µm
25-84 µm
Width Range
6-9 µm
6-9 µm
Striae in 10 µm
11-13 in the center valve, 14-16 at the ends
11-13 in the center valve, 14-16 at the ends
Length Range
10–55 µm
10–55 µm
Width Range
4–8 µm
4–8 µm
Striae in 10 µm
15-20
15-20
