Kisseleviella

From Frustule

GENUS Kisseleviella
Sheshukova-Poretskaya (1962)
Taxonomic Information Generitype: Kisseleviella carina Sheshukova-Poretskaya, 1962. Genus Description: Cellulae laxe catenulatae. Frustula a faciebus apicali et transapicali symmetrica, a facio valvari asymmetrica, a zona connectivali linearia, anulis intercalaribus et septis nullis. Valvae naviculoideae, variiformes, extremitatibus, attenuatis, interdum capitatis, umbonibus uno centrali vel tribus tuberculiferis praeditae, per quos cellulae in colonias conjunguntur. Structura valve inconspicua bel punctata, punctulis opacis. Genus monotypicum marinum fossile. [Translation]: Cells loosely concatenated. Frustule symmetrical with respect to the longitudinal and transverse planes and slightly asymmetrical with respect to the valvar plane, with a straight connective zone, no intercalary bands or septa present. Valves Navicula-like, differ in shape with pronounced, sometimes bulbous ends. Surface of valve with one or three convexities. On the convexities are ringlike tubercles, by means of which the cells join together into colonies. Structure of valve indiscernible, rarely in the form of numerous scattered dull-colored points. A marine extinct monotypic genus. Neogene.

List of Species belonging to the Genus Kisseleviella

General Remarks

Ob structuram haud pennatam et formam valvae genus hoc ad familiam Rutilariaceae Pantocsek ordinis Mediales Jouse et Proshkina-Lavrenko (1949, Diatomovyy Analiz, lib. 2, p. 210) referri potest. Genus novum generi Rutilariopsis V. Heurck (Van Heurck, 1896, A Treatise on the Diatomaceae. London: William Wesley and Son, p. 459) affine est, a quo tamen umbonibus tuberculiferis et valvae superficie haud aculeata differt. A genere Rutilaria Greville (Van Heurck, 1896, op. cit., p. 433) processu centrali noduloso nullo distat.

[Translation]: Absence of any pennate structure and the shape of the valve allow us to refer this genus to the Order Mediales Jouse and Proshkina-Lavrenko (1949, in: Diatomovyy Analiz, book 2, p. 210) and the Family Rutilariaceae Pantocsek. The new genus is close to Rutilariopsis Van Heurck (1896, A Treatise on the Diatomaceae. London: William Wesley and Son, p. 459), differing from it in having ringlike tubercles on the convexities of the valve and by having no spines. From Rutilaria Greville it differs, moreover, by lacking the nodular expression in the center of the valve.

Additional Remarks

by Akiba and Yanagisawa (1986, p. 494):

The genus has long been regarded as monospecific since its erection, but Akiba (1980) suggested that its type species, K. carina, is heterogenous, and Akiba (this volume) describes a second species of the genus, K. ezoensis. We describe here another species, K. magnaareolata. It is possibly not a Neogene species, but we tentatively include it here for the purpose of demonstrating that Kisseleviella will be represented by more species in the course of future investigations. The systematic position of this genus is not yet certain (Simonsen, 1979), although close relationships of the genus with other genera such as Cymatosira, Rutilariopsis, and Campylosira have been suggested (Fenner, 1979 - 1978?). Possibly, it is an extinct member of family Cymatosiraceae, established by Hasle et al. (1983).

Useful References

• Sheshukova-Poretskaya, V. S., 1962. New and rare Bacillariophyta from the Diatom Suite of Sakhalin. [Russian and Latin.] Leningradskiy Gosudarstvennyy Universitet, Biologicheskiy Institut, Uchenyye Zapiski, Leningrad, no. 313, Seriya Biologicheskikh Nauk, vypusk 49, Nizshiye Rasteniya, p. 206.