taxonID	type	description	language	source
038487BFFFD4FF8CFF10FA8C7734F853.taxon	description	Description: — LM: Valves strongly asymmetrical to the apical axis, lanceolate, dorsal margin strongly arched, ventral margin nearly straight to slightly concave, except at mid-valve, where it is slightly tumid (Figs 1 – 7). Ends obtusely rounded. Length 32 – 56 μm, breadth 8.0 – 9.5 μm. Maximum length / width ratio 6.0 (n = 60). The axial area is moderately wide, linear-lanceolate in shape. Central area absent. Raphe strongly lateral, becoming filiform near the distal ends and slightly reverse-lateral near the proximal ends. Proximal raphe ends distinct, ventrally bent, external distal raphe ends dorsally deflected. Striae radiate. Stigmata 3 – 6 positioned on the ventral side of the central nodule and adjacent to the middle ventral stria. Striae in the middle 11 – 12 in 10 μm, becoming up to 20 – 21 in 10 um towards the ends, areolae 25 – 27 in 10 μm. SEM: Externally, axial area moderately wide, curved, ventrally displaced near the central area (Figs 14 – 19). Proximal raphe branches ventrally deflected (Figs 18 – 19), distal raphe fissures strongly curved towards the dorsal side (Figs 16 – 17). Striae radiate throughout (Figs 14 – 15) and extending onto the mantle without interruption (Fig. 18). Valve face areolae 25 – 27 in 10 μm. Stigmata 3 – 6, present on the ventral side near the central nodule (Figs 18 – 19). Apical pore fields absent (Figs 14 – 17). Internally, the axial area is linear-lanceolate (Figs 20 – 21). Distal raphe endings terminate as helictoglossae, deflected slightly off the main raphe axis (Figs 22 – 23). The central nodule is indistinct. Raphe continuous, lacking an intermissio in the center (Figs 20 – 21, 24 – 25). Stigmata 3 – 6, present on the ventral side near the central nodule (Figs 24, 25). Each stigma is surrounded by siliceous protuberances (Figs 24 – 25). Each stria is positioned within an alveolus internally (Figs 20 – 21).	en	Liu, Wei, Li, Yan-Ling, Wu, Han, Kociolek, John Patrick (2021): Delicatophycus liuweii sp. nov., a new cymbelloid diatom (Bacillariophyceae) from an upper tributary of the Liujiang River, Guangxi, China. Phytotaxa 505 (1): 63-70, DOI: 10.11646/phytotaxa.505.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.505.1.4
038487BFFFD4FF8CFF10FA8C7734F853.taxon	materials_examined	Type: — CHINA. Guangxi Province, Hechi City, Liujiang River, upper tributary of unknown name, 24 ° 44.56 ′ N, 107 ° 55.02 ′ E. 675 m asl, W. Liu on 8 th July 2018. (holotype: Herbarium of Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences! Slide # GXLJ 01 = Fig. 1).	en	Liu, Wei, Li, Yan-Ling, Wu, Han, Kociolek, John Patrick (2021): Delicatophycus liuweii sp. nov., a new cymbelloid diatom (Bacillariophyceae) from an upper tributary of the Liujiang River, Guangxi, China. Phytotaxa 505 (1): 63-70, DOI: 10.11646/phytotaxa.505.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.505.1.4
038487BFFFD4FF8CFF10FA8C7734F853.taxon	etymology	Etymology: — The specific epithet ‘ liuweii ’ refers to the name of the sample collector.	en	Liu, Wei, Li, Yan-Ling, Wu, Han, Kociolek, John Patrick (2021): Delicatophycus liuweii sp. nov., a new cymbelloid diatom (Bacillariophyceae) from an upper tributary of the Liujiang River, Guangxi, China. Phytotaxa 505 (1): 63-70, DOI: 10.11646/phytotaxa.505.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.505.1.4
038487BFFFD4FF8CFF10FA8C7734F853.taxon	biology_ecology	Ecology: — Delicatophycus liuweii has so far only been found in the Liujiang River, in a littoral habitat with low CODMn (0.9 mg · L- 1), BOD 5 (4.05 mg · L- 1) and NH 4 + - N (0.066 mg · L- 1), and moderate DO (8.47 mg · L- 1). Species associated in the collections containing D. liuweii include: Achnanthidium minutissimum (Kützing) Czarnecki (1994: 157) (16.1 %), Rossithidium petersenii (Hustedt) Aboal in Aboal et al. (2003: 178) (5.7 %), Lemnicola exigua (Grunow) Kulikovskiy, Witkowski & Plinski in Plinski & Witkowski (2011: 112) (4.5 %), Humidophila contenta (Grunow) Lowe, Kociolek, J. R. Johansen, Van de Vijver, Lange-Bertalot & Kopalová (2014: 357) (5.4 %), Halamphora montana (Krasske) Z. Levkov (2009: 207) (6.5 %), Cocconeis placentula Ehrenberg (1838: 194) (2.1 %), Encyonopsis leei Krammer (2003: 514) (2.7 %), Luticola mutica (Kützing) Mann in Round et al. (1990: 670) (2.1 %), Nitzschia palea (Kützing) Smith (1856: 89) (14.8 %), Nitzschia valdecostata Lange-Bertalot & Simonsen (1978: 58) (2.4 %), Gomphonella olivacea (Hornemann) Rabenhorst (1853: 61) (2.8 %), Navicula trivialis Lange-Bertalot (1980: 31) (6.3 %) and other unidentified species of Gomphonema Ehrenberg (1832: 87) and Cymbella (Agardh 1830: 1).	en	Liu, Wei, Li, Yan-Ling, Wu, Han, Kociolek, John Patrick (2021): Delicatophycus liuweii sp. nov., a new cymbelloid diatom (Bacillariophyceae) from an upper tributary of the Liujiang River, Guangxi, China. Phytotaxa 505 (1): 63-70, DOI: 10.11646/phytotaxa.505.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.505.1.4
