Compare Proschkinia vergostriata
Proschkinia lacrimula has nearly parallel striae, becoming slightly convergent at the apices. The apices are more rostrate, and the external opening of the fistula is a simple, unobstructed pore.
LM scalebar = 10 µm
Length Range
5.0-15.0 µm
5.0-15.0 µm
Width Range
1.5-3.0 µm
1.5-3.0 µm
Striae in 10 µm
27-43, increasing in density from mid-valve toward apices
27-43, increasing in density from mid-valve toward apices