taxonID	type	description	language	source
A85D87BFF75DFFF44A88D6FBFB74F7AD.taxon	description	Description: — LM: Cells solitary. Frustules rectangular in girdle view. Valves linear elliptical to elliptical with obtusely rounded to cuneate apices. Valve dimensions: length 4.9 ~ 8.2 μm, breadth 1.8 ~ 2.6 μm (Figs 1 – 4). The sternum and striae are invisible. SEM: Valve face flat. The ventral mantle is deep and the dorsal mantle is wide (Figs 5 – 9). Uniseriate striae along both sides of sternum alternately distributed or oppositely distributed, arranged in parallel, 32 ~ 34 in 10 μm (Figs 9, 12). Virgae wider than vimines, merging with sternum at valve centre. Sternum indistinct. Areolae round, occluded by simple volae (Fig. 10). Rimoportula located within a stria situated at valve centre, few valves with no rimoportulae near centre (Figs 5 – 7, 9). Externally, the rimoportula appears as a slit-like opening that is elongated in parallel with striae. Internally, rimoportula are also simple, with slight siliceous thickenings (Fig. 11). Two semilunar pores are observed at both poles, which are more like fissures, forming simple apical pore fields (Figs 8, 10).	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
A85D87BFF75DFFF44A88D6FBFB74F7AD.taxon	materials_examined	Type: — CHINa. Fujian = Province, Xiapu County, Ningde City: Dajing Beach, sand sample from intertidal, low tide area, 26 ° 42 ‘ 34 “ N, 120 ° 7 ’ 17 ” E, May 2018, Z. Wang (holotype slide N 202101! = Fig. 1; isotype Slide NI 202101, both at School of Life Sciences, Xiamen University, Xiamen, People’s Republic of China).	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
A85D87BFF75DFFF44A88D6FBFB74F7AD.taxon	etymology	Etymology: — The epithet “ xiapuensis ” derives from the site where the specimen was found.	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
A85D87BFF75FFFF04A88D396FB5DFDCE.taxon	description	Description: — LM: Cells solitary. Frustules rectangular in girdle view. Valves linear elliptical to elliptical with round apices. Valve dimensions: length 4.6 ~ 6.0 μm, breadth 1.6 ~ 1.8 μm. The sternum and striae are invisible. SEM: Valve surface flat. The valve margin is simple and smooth. The ventral mantle is deep and the dorsal mantle is wide (Figs 17, 19, 22). Sternum narrow, not obvious, extending to the apical pore area at both poles (Fig. 17). Striae uniseriate, symmetrically distributed on two sides of the sternum, 44 ~ 46 in 10 μm (Figs 17, 21). Areolae small, subcircular, occluded by external volae. Apical pore fields simple, composed of two pores. The pores in apical pore fields narrow and more like the fissure (Fig. 23). The external slit-like aperture of the rimoportula is located in the striae near sternum at the valve centre, and the internal opening with slight siliceous thickening is simple and situated close to the sternum (Figs 18, 19, 21). The girdle is composed of three simple bands with a typical staurosirid girdle construction. The plain bands open, curved and thin at the cell apices. The valvocopula is broader than the segmented copulae (Fig. 22).	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
A85D87BFF75FFFF04A88D396FB5DFDCE.taxon	materials_examined	Type: — CHINa, = Fujian Province, Pingtan County: Longfengtou Beach, sand sample from intertidal, low tide area, 25 ° 30 ‘ 19 “ N, 119 ° 48 ’ 57 ” E, May 2018, Z. Wang, School of Life Sciences, Xiamen University (holotype slide N 202102! = Fig. 2; isotype slide NI 202102, both at School of Life Sciences, Xiamen University, Xiamen, People’s Republic of China).	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
A85D87BFF75FFFF04A88D396FB5DFDCE.taxon	etymology	Etymology: — The epithet “ pingtanensis ” derives from the site where the specimen was found.	en	Zhang, Weiyu, Wang, Zhen, Zhuo, Suqing, Gao, Yahui, Li, Xuesong, Liang, Junrong, Chen, Changping (2022): Two new species of Plagiostriata (Bacillariophyaceae) from sand sediments of southern China. Phytotaxa 556 (1): 87-93, DOI: 10.11646/phytotaxa.556.1.7, URL: http://dx.doi.org/10.11646/phytotaxa.556.1.7
