Fottea 2022, 22(1):137-151 | DOI: 10.5507/fot.2021.020

Three new species of Delicatophycus M.J. Wynne (Bacillariophyta) from China, all possessing apical pore fields

Bing Liu1*, Yang-Yan Zhou1, Saúl Blanco2, David M. Williams3
1 College of Biology and Environmental Sciences, Jishou University, Jishou 416000, People's Republic of China; *Corresponding author e-mail: jsulb@outlook.com
2 Departamento de Biodiversidad y Gestión Ambiental, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, 24071, León, Spain
3 Department of Life Sciences, the Natural History Museum, Cromwell Road, London SW7 5BD, UK

Delicatophycus wulingensis sp. nov., D. qinghainensis sp. nov., and D. menyuanensis sp. nov., are described, illustrated, and compared to similar taxa. Two types of apical pore fields (APFs) in the genus Cymbella are defined. The three new Delicatophycus all possess the type II APF found in some species of Cymbella, i.e. the APF is divided by the distal raphe fissure into two areas, one larger than the other. They also share a further three distinct features: variable central dorsal portion of valve, stigmata, and a notch on the dorsal side of the distal raphe fissure. Since there are many species of Delicatophycus without APFs, such as D. sinensis M.J. Wynne, D. williamsii M.J. Wynne and D. chongqingensis M.J. Wynne; D. williamsii and D. liuweii Li both possess stigmata, thus proposed diagnostic characters for Delicatophycus are the tilde-shaped areolae and the dorsally curved distal fissures.

Keywords: central area, dorsoventral, Qinghai, tilde-shaped, Wuling Mountains

Received: June 29, 2021; Revised: August 23, 2021; Accepted: September 29, 2021; Prepublished online: January 11, 2022; Published: April 1, 2022Show citation

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Liu, B., Zhou, Y., Blanco, S., & Williams, D.M. (2022). Three new species of Delicatophycus M.J. Wynne (Bacillariophyta) from China, all possessing apical pore fields. Fottea, 22(1), 137-151. doi: 10.5507/fot.2021.020
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    References

    1. Bahls, L.L. (2017): Diatoms from Western North America 1. Some new and notable biraphid species. - 52 pp., Montana Diatom Collection, Helena.
    2. Bahls, L. (2019): Diatoms from Western North America 2. Cymbellafalsa, Cymbopleura and Delicatophycus (Bacillariophyta) - taxonomy, ecology, biogeography. - 114 pp., The Montana Diatom Collection, Helena, Montana.
    3. Buczkó, K.; Ognjanova-Rumenova, N.; Wojtal, A.Z. & Stenger-Kovács, C. (2015): Ultrastructure and taxonomic position of Cymbella latestriata Pantocsek (Bacillariophyta). - Phytotaxa 207: 172-180. DOI: http://dx.doi.org/10.11646/phytotaxa.207.2.3 Go to original source...
    4. Cox, E.J. (2012): Ontogeny, homology, and terminology-wall morphogenesis as an aid to character recognition and character state definition for pennate diatom systematics. - Journal of Phycology 48: 1-31. DOI: http://dx.doi.org/10.1111/j.1529-8817.2011.01081.x Go to original source...
    5. Garcia, M. & Dutra, D.B. (2016): Cymbella loescherae sp. nov. (Bacillariophyceae) from first-order streams of southern Brazil. - Polish Botanical Journal 62: 189-197. DOI: https://doi.org/10.1515/pbj-2016-0026 Go to original source...
    6. Jüttner, I.; Gurung, S.; Sharma, C.; Sharma, S.; de Haan, M. & Van de Vijver, B. (2010): Morphology of new taxa in the Cymbella aspera and Cymbella neocistula Groups, Cymbella yakii sp. nov., and Cymbella cf. hantzschiana from the Everest National Park, Nepal. - Polish Botanical Journal 55: 73-92.
    7. Krammer, K. (2002): Cymbella. - In: Lange-Bertalot, H. (ed.): Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats, Vol. 3. - 584 pp., A.R.G. Gantner Verlag K.G., Ruggell.
    8. Krammer, K. (2003): Cymbopleura, Delicata, Navicymbula, Gomphocymbellopsis, Afrocymbella. - In: Lange-Bertalot, H. (ed.): Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats, Vol. 4. - 529 pp., A.R.G. Gantner Verlag K.G., Ruggell.
    9. Kociolek, J.P. & Stoermer, E.F. (1988): A preliminary investigation of the phylogenetic relationships among the freshwater, apical pore field-bearing cymbelloid and gomphonemoid diatoms (Bacillariophyceae). - Journal of Phycology 24: 377-385. Go to original source...
    10. Le Cohu, R.; Marquie, J. & Tudesque, L. (2018): Three new species of Delicata (Bacillariophyceae - Cymbellales) from New Caledonia and further observations on Delicata nepouiana Krammer and D. neocaledonica Krammer. - Diatom Research 33: 39-53. DOI: https://doi.10.1080/0269249X.2017.1407827 Go to original source...
    11. Le Cohu, R.; Marquie, J. & Tudesque, L. (2019): Three new species of Delicatophycus M.J. Wynne (Gomphonemataceae, Bacillariophyta) from New Caledonia. - Notulae Algarum 98: 1-3.
    12. Liu, B.; Blanco, S. & Lan, Q.Y. (2018): Ultrastructure of Delicata sinensis Krammer et Metzeltin and D. williamsii sp. nov. (Bacillariophyta) from China. - Fottea 18: 30-36. DOI: https://doi.org/10.5507/fot.2017.009 Go to original source...
    13. Liu, B.; Williams, D.M.; Li, Y. & Tang, Z.S. (2020): Two new species of Cymbella (Bacillariophyceae) from China, with comments on their valve dimensions. - Diatom Research 35: 99-111. DOI: https://doi.org/10.1080/0269249X.2020.1733100 Go to original source...
    14. Liu, W.; Li, Y.L.; Wu, H. & Kociolek, J.P. (2021): Delicatophycus liuweii sp. nov., a new cymbelloid diatom (Bacillariophyceae) from an upper tributary of the Liujiang River, Guangxi, China. - Phytotaxa 505: 63-70. DOI: https://doi.org/10.11646/phytotaxa.505.1.4 Go to original source...
    15. Spaulding, S. & Edlund, M. (2008): Delicata. - In Diatoms of North America. - https://diatoms.org/genera/delicata
    16. Stancheva, R. & Ivanov, P. (2011): Cymbella orientalis var. delicatula var. nov. (Bacillariophyta), a new epilithic stream diatom from Bulgaria. - Nova Hedwigia 93: 453-464. Go to original source...
    17. Turland, N.J.; Wiersema, J.H.; Barrie, F.R.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Kusber, W.-H.; Li, D.-Z.; Marhold, K.; May, T.W.; McNeill, J.; Monro, A.M.; Prado, J.; Price, M.J. & Smith, G.F., editors (2018): International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017, Vol. 159. - 253 pp., Regnum Vegetabile, Koeltz Botanical Books, Glashütten. Go to original source...
    18. Wynne, M.J. (2019): Delicatophycus gen. nov: a validation of "Delicata Krammer" inval. (Gomphonemataceae, Bacillariophyta). - Notulae Algarum 97: 1-3.
    19. Yang, S.-Q.; Zhang, W.; Blanco, S.; Jüttner, I & Wu, Z.-X. (2019): Delicata chongqingensis sp. nov., a new cymbelloid diatom species (Bacillariophyceae) from Daning River, Chongqing, China. - Phytotaxa 393: 057-066. DOI: http://doi.org/10.11646/phytotaxa.393.1.5 Go to original source...

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