Nupela elegantula
Potapova 2011 Category: Symmetrical biraphid
BASIONYM: Nupela elegantula Potapova 2011
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Marina Potapova - October 2010
Length Range: 12-26 µm
Width Range: 3.1-4.0 µm
Striae in 10 µm: 34-38
Description
Valves are linear-lanceolate with broadly subrostrate ends. Striae are slightly radiate throughout the valve, parallel or slightly convergent at the apices, 34-38 in 10 μm. There are 3-4 areolae in each stria on the valve face and one areola on the mantle. Raphe is absent on one of the valves. Raphe valve has rhombic-lanceolate axial area and round central area. Rapheless valve has rhombic-lanceolate axial area, but no distinct central area. Raphe has double-curved external slit and straight internal slit. External proximal raphe ends are moderately expanded, internal proximal raphe slits are T-shaped. Terminal raphe fissures are sharply deflected towards secondary side of the valve.
Original Description
Basionym: Nupela elegantula
Author: Potapova 2011
Length Range: 12-26 µm
Width Range: 3.1-4 µm
Striae in 10 µm: 34-38
Original Description
Valves linear-lanceolate 3.1–4.0μm wide,12–26μm long with broadly subrostrate ends. Striae slightly radiate throughout the valve, parallel or slightly convergent at the apices, 34–38 in 10μm. There are 3– 4 areolae in each stria on the valve face and one areola on the mantle. Raphe absent on one of the valves. Raphe valve with rhombic-lanceolate axial area and round central area. Rapheless valve with rhombic-lanceolate axial area, but without distinct central area. Raphe with double-curved external slit and straight internal slit. External proximal raphe ends moderately expanded, internal proximal raphe slits T-shaped. Terminal raphe fissures sharply deflected towards secondary side of the valve.
Original Images
Cite This Page:
Potapova, M. (2010). Nupela elegantula. In Diatoms of the United States. Retrieved May 22, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nupela_elegantula
Species: Nupela elegantula
Contributor: Marina Potapova
Reviewer: Sarah Spaulding
Image Credit: Marina Potapova
- Valves linear-lanceolate
- Raphe absent on one valve
- Rhombic-lanceolate axial areas on both valves
- Raphe valve with round central area
Valves are linear-lanceolate with broadly subrostrate ends. Striae are slightly radiate throughout the valve, parallel or slightly convergent at the apices, 34-38 in 10 μm. Raphe is absent on one of the valves. Raphe valve has rhombic-lanceolate axial area and round central area. Rapheless valve has rhombic-lanceolate axial area, but no distinct central area.
Compare
Nupela elegantula differs from N. fennica and N. vitiosa by absence of raphe on one valve and less linear valves.
Nupela fennica
Nupela vitiosa
Citations
Potapova, M. (2011). New species and combinations in the genus Nupela from the USA. Diatom Research. 10.1080/0269249X.2011.575111
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: