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Issue: Vol. 186 No. 2: 21 November 2014
Type: Article
Published: 2014-11-21
DOI: 10.11646/phytotaxa.186.2.1
Page range: 61–74
Abstract views: 16
PDF downloaded: 1

Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P.O. box 9825, Beijing 100029, China
Institute of Biology, Faculty of Natural Sciences, Ss Cyril and Methodius University, Archimedova 3, Skopje, R. Macedonia
Department of Life Sciences, the Natural History Museum, Cromwell Road, London, United Kingdom
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China; Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China
Diatoms taxonomy Hippodonta Lake Qinghai China landmark analysis

Abstract

A new medium-sized species of Hippodonta (Bacillariophyceae) is described from Lake Qinghai, China. The morphology and ultrastructure of Hippodonta qinghainensis sp. nov. are described using light and scanning electron microscopy. This new species is compared with similar species of Hippodonta using conventional and geometric morphometric analyses. Hippodonta qinghainensis can be separated from the other species of Hippodonta by a unique combination of characters that include an elliptic-lanceolate to rhombic-lanceolate valve shape, non protracted apices, the absence of fascia, relatively coarse, uniseriate striae and the presence of two rows of lineolae around the valves apices.