Cymbella neoleptoceros

Valves are dorsiventral and rhombic-lanceolate with rounded apices. The dorsal margin is moderately arched. The ventral margin is somewhat less arched and slightly tumid in the largest specimens. The axial area is a bit wider than the raphe and lies just ventral of the valve mid line. The central area is a somewhat wider continuation of the axial area and, in some specimens, is defined by one or two shorter striae on the dorsal side. The raphe is distinctly lateral and bowed, narrowing toward the proximal and terminal ends. Proximal raphe ends are deflected ventrally and terminate in slightly inflated pores. Distal raphe fissures are deflected dorsally at about a 45 degree angle. Striae are nearly parallel at the valve center, becoming strongly radiate at the apices. The areolae are very distinct in LM and number 18-22 in 10 µm. A stigma is lacking.