Compare Plagiotropis arizonica
Plagiotropis lepidoptera var. proboscidea has smaller valves with striae that are parallel at the valve center. Furthermore, the areolae are difficult to resolve in LM and number 26-30 in 10 µm.
LM scalebar = 10 µm
Length Range
147-180 µm
147-180 µm
Width Range
24-31 µm
24-31 µm
Striae in 10 µm
13-15 (center); 16-17 (ends)
13-15 (center); 16-17 (ends)
Length Range
73-110 µm
73-110 µm
Width Range
17.1-20.4 µm
17.1-20.4 µm
Striae in 10 µm
17-19
17-19
