Two new Stephanodiscaceae species(Bacillariophyta)from SW China  

作　　者：Pan YU Fen LUO Qingmin YOU John Patrick KOCIOLEK Wanting PANG Yue CAO Quanxi WANG 

机构地区：[1]School of Environmental and Geographical Sciences,Shanghai Normal University,Shanghai 200235,China [2]College of Life Sciences,Shanghai Normal University,Shanghai 200234,China [3]College of Chemistry Biology and Environment,Yuxi Normal University,Yuxi 653100,China [4]Museum of Natural History and Department of Ecology and Evolutionary Biology,University of Colorado,UCB 218,Boulder CO 80309,USA

出　　处：《Journal of Oceanology and Limnology》2024年第6期2024-2033,共10页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(Nos.32170205,32100165);the Research Fund from Department of Education,Yunnan Province(No.2022J0757)。

摘　　要：Two new freshwater centric diatom species were described from the southwest of China based on light and scanning electron microscopy.Pliocaenicus weixiense sp.nov.has a transversely undulate valve face,marginal fultoportulae situated at the end of the hyaline strips,central fultoportulae forming a ring positioned in a circular pattern,each with 3-4(usually 3)satellite pores,and a single rimoportula located at the base of the inner distal end of the costa.Tertiarius aspera sp.nov.has an uneven valve face with small granules that may be present on the marginal area and valve mantle,marginal fultoportulae situated on each costa close to the margin of the valve,6-7 central fultoportulae forming a ring near the valve center each with two satellite pores,and one rimoportula located on the valve face/mantle junction in the middle of costa on the internal valve.T.aspera sp.nov.is the first reported extant species in the genus.This study played an important role in studying the taxonomic status and ecological information of the genus,and the establishment of the two new taxa will help demonstrate the unique nature of freshwater diatom flora in the southwest of China.

关 键 词：DIATOM centric new species Pliocaenicus Tertiarius China 

分 类 号：Q949.2[生物学—植物学]