Ultrastructure of three Species of Entomoneis (Bacillariophyta) from Lake Qinghai of China, with reference to the external areola occlusions.

ABSTRACT: Three sympatric Entomoneis species, found at the same specific locality in Lake Qinghai, China, are studied by using light and scanning electron microscope. Two species are proposed as new to science and named as E.sinensis sp. nov. and E.qinghainensis sp. nov. The third species is identified as E.paludosa (W. Smith) Reimer. Entomoneissinensis has a linear-lanceolate valve outline and Ƨ-shaped keel, bears two distinct 8-shaped loops formed by the valvocopula pars media in each cell and each of its stria is composed of either a long hymen strip or a long hymen strip plus one separated areola close to the raphe. Its hymen strip belongs to Type Two, which is a siliceous membrane strip perforated by two rows of linear pores next to transapical costae and two

SUBMITTER: Long JY 

PROVIDER: S-EPMC8807577 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature