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Nupela neglecta

Ponader, R.L.Lowe and Potapova in Potapova et al. 2003      Category: Symmetrical biraphid

Nupela lapidosa


Nupela pennsylvanica

LM scalebar = 10 µm = 80 pixels.


Contributor: Marina Potapova - October 2010
Length Range: 3-15 µm
Width Range: 2.6-4.5 µm
Striae in 10 µm: 40-48


Valves lanceolate to elliptical-lanceolate, with slightly protracted apices, often slightly asymmetric about apical and transapical planes. The smallest valves may become oval. One valve slightly concave, with long raphe slits. The other valve, slightly convex, with distinctly shorter raphe slits and widely separated central endings. Terminal raphe fissures forming a curved opening to the primary side of the valve. Axial area linear-lanceolate, sometimes widening into a small, round or elliptical central area. Transapical striae slightly radiate, becoming parallel or slightly convergent near the poles, 40-48 in 10 μm. Areolae form 3-4 longitudinal rows on each side of the raphe. Outer openings of areolae are transapically elongate, covered by hymenes lying flush with the valve surface. Inner openings of areolae are small, oval foramina.

Original Description

Author: Ponader, R.L.Lowe and Potapova in Potapova et al. 2003
Length Range: µm
Striae in 10 µm:

Original Description

Original Images

Original text and images reproduced with permission by the author.

Cite This Page:
Potapova, M. (2010). Nupela neglecta. In Diatoms of the United States. Retrieved May 24, 2018, from

Species: Nupela neglecta

Contributor: Marina Potapova

Reviewer: Sarah Spaulding


Potapova, M., Ponander, K.C., Lowe, R.L., Clason, T.A. and Bahls, L.L. (2003). Small-celled Nupela species from North America. Diatom Research 18: 293-306.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Nupela neglecta CAS

North American Diatom Ecological Database (NADED)


Autecology Discussion