RT Journal Article
SR Electronic
A1 Kulikovskiy, Maxim
A1 Genkal, Sergei
A1 Maltsev, Yevhen
A1 Glushchenko, Anton
A1 Kuznetsova, Irina
A1 Kapustin, Dmitry
A1 Gusev, Evgeniy
A1 Martynenko, Nikita
A1 Kociolek, John Patrick
T1 Resurrection of the diatom genus Stephanocyclus (Coscinodiscophyceae: Stephanodiscaceae) on the basis of an integrated molecular and morphological approach
JF Fottea
YR 2022
VO 22
IS 2
SP 181
OP 191
DO 10.5507/fot.2021.025
UL https://fottea.czechphycology.cz/artkey/fot-202202-0003.php
AB The history of the description and subsequent consideration of the diatom genus Stephanocyclus Skabitschevsky (Thalassiosirales, Bacillariophyta) is discussed. The new genus was described on the basis of a new species, S. planum Skabitschevsky, originally collected from the River Ob. However, the genus has been more or less forgotten since its initial description in 1975. Type material from Skabitschevsky's collection has subsequently been lost. An epitype for this species is recognized from the same region as the original collection, and typified with a population from Lake Baikal and using molecular data. The population from Lake Baikal fully corresponds in terms of morphological features with the population originally investigated by Skabitschevsky. Morphology of the genus Stephanocyclus is discussed and, on the basis of an integrated molecular and morphological investigation, we propose to recognize the genus, including four species within it. Three taxa are transferred to the genus, including Cyclotella cryptica, C. gamma and C. meneghiniana. A comparison of Stephanocyclus with other cyclotelloid genera is given.