Nupela vitiosa
(Schimanski) Siver and Hamilton 2005 Category: Symmetrical biraphid
BASIONYM: Navicula vitiosa Schimanski 1978
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Marina Potapova - October 2010
Length Range: 6.5-15.0 µm
Width Range: 2.7-3.6 µm
Striae in 10 µm: 35-40
Description
Valves are linear-elliptical-lanceolate with rounded slightly drawn-out ends.ends. Axial area is narrowly linear. Central area is elliptical or round, usually asymmetrically expanded to one side of the valve. Striae are radiate in the middle, slightly convergent at apices, 35-40 in 10 μm. Areolae transersely ellitpical, covered by external hymens, approximately 45 in 10 mm. Raphe is filiform, straight or very slightly curved, with slightly expanded external proximal endings.
Original Description
Basionym: Navicula vitiosa
Author: Schimanski 1978
Length Range: 10-16 µm
Width Range: 3-4 µm
Striae in 10 µm: 35-40
Original Description
Schalen linear-elliptisch mit schwach konvexen Seiten und breit gerundeten Enden, 10-16 μm lang, 3-4 μm breit. Raphe gerade bis leicht gebogen, fadenförmig. Polspalten fast rechtwinklig nach derselben Seite abgebogen, Zentralporen ziemlich weit vonein-ander entfernt. Axialarea eng linear, Zentralarea groβ, rundlich, einseitig bis an den Rand reichend. Transapikalstreifen in der Mitte radial, an den Enden schwach konvergent, 35-40 in 10 μm, punktiert, ca. 50 Poroide in 10 μm, in unregelmäβigen, welligen Längsreihen
Original Images
Cite This Page:
Potapova, M. (2010). Nupela vitiosa. In Diatoms of the United States. Retrieved June 19, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nupela_vitiosa
Species: Nupela vitiosa
Contributor: Marina Potapova
Reviewer: Sarah Spaulding
Image Credit: Marina Potapova
- Valves linear-elliptical-lanceolate
- Central area elliptical usually asymmetrically expanded to one side
- Striae 35-40 in 10 μm
Valves are linear-elliptical-lanceolate with rounded slightly drawn-out ends. Axial area is narrowly linear. Central area is elliptical or round, usually asymmetrically expanded to one side of the valve. Striae are radiate in the middle, slightly convergent at apices, 35-40 in 10 μm.
Compare
Nupela vitiosa differs from N. fennica by the shape of the central area, which is elliptical and asymmetrical, expanded to one side of the valve. Nupela fennica has an symmetrical rectangular central area.
Nupela fennica
Citations
Schimanski, H. (1978). Beitrag zur Diatomeenflora des Frankenwaldes. Nova Hedwigia 30: 557-634.
Siver, P.A. and Hamilton, P.B. (2005). Observations on new and rare species of freshwater diatoms from Cape Cod, Massachusetts, USA. Canadian Journal of Botany 83:362-378.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 92018