Abstract
A new species of the diatom genus Luticola D.G.Mann is described from a wet meadow environment from Gunnison County, Colorado, based on light and scanning electron microscopy. The new species has rugose valves, with longitudinal interruptions in the striae. Unlike other species of the genus, L. coloradiana sp. nov. has a simple structure of the internal stigma, lacking the complex opening seen in all other species in the genus. The new species resembles L. plausibilis (Hustedt) D.G.Mann, described from Franz Josef Land in the Arctic, but differs in valve shape and density of the striae. Luticola coloradiana sp. nov. also resembles L. plausibiloides Metzeltin et al., a species described from subtropical Uruguay, but differs in striae density and the rugose nature of the valves. Further research is needed to assess if the similar species from the Arctic and subtropical South America also possess the unique stigma structure seen in L. coloradiana sp. nov.
References
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<p>Bahls, L.L. (2013) New diatoms (Bacillariophyta) from western North America. <em>Phytotaxa</em> 82 (1): 7–28. https://doi.org/10.11646/phytotaxa.82.1.2</p>
<p>Bąk, M., Kryk, A., Peszek, Ł., Kociolek, J.P., Bemiasa, J. & Bemanaja, E. (2019) New and interesting Luticola species (Bacillariophyta) from the mangroves of Nosy Be Island, NW Madagascar. <em>Oceanological and Hydrobiological Studies </em>48: 13–22<em>. </em>https://doi.org/10.1515/ohs-2019-0002</p>
<p>Bock, W. (1963) Diatomeen extreme trockener Standorte. <em>Nova Hedwigia</em> 5: 199–254.</p>
<p>Bock, W. (1970) Felsen und mauern als diatomeenstandorte.<em> In: </em>Gerloff, J. & Cholnoky, J.B. (eds.) Diatomaceae II. <em>Beihefte zur Nova Hedwigia</em> 31: 395–441. https://doi.org/10.1127/nova.beihefte/31/1970/395</p>
<p>Carlson, G.W.F. (1913) Süsswasser-Algen aus der Antarktis, Süd-Georgien und den Falkland Inseln.<em> In:</em> <em>Wissenschaftliche Ergebnisse der Schwedischen Südpolar-Expedition 1901-1903, unter leitung von Dr. Otto Nordenskjöld. </em>Band 4 (Lieferung 14). Stockholm, Lithographisches Institut des Generalstabs. 94 pp.</p>
<p>Cleve, P.T. (1894) Synopsis of the naviculoid diatoms, Part 1. <em>Kongelige Svenska Vetenskaps-Akademiens Handlingar</em> 26: 1–194.</p>
<p>Das, S.K., Rawat, D.S., Dash, S.S., Banerjee, A., Sinha, B.K. & Singh, P. (2020) Moss-inhabiting diatoms as ecological indicators in Neora Valley National Park (Eastern Himalaya), India. <em>Tropical Ecology </em>61: 226–237. https://doi.org/10.1007/s42965-020-00083-9</p>
<p>Frenguelli, J. (1941) XVI Contribución al conocimiento de las diatomeas argentinas. Diatomeas del Río de la Plata. <em>Revista del Museo de la Plata, Nueva Serie 3, Sección Botánica</em> 15: 213–334.</p>
<p>Hustedt, F. (1964) Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. <em>In: </em>Rabenhorst, L. (Ed.) <em>Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h. Leipzig.</em> 7 (Teil 3, Lief. 4). pp. 557–816.</p>
<p>Johansen, J.R. & Rushforth, S.R. (1981) Diatoms of surface waters and soils of selected oil shale lease areas of Eastern Utah. <em>Nova Hedwigia</em> 34: 333–390.</p>
<p>Johansen, J.R., Rushforth, S.R., Orbendorfer, R., Fungladda, N. & Grimes, J.A. (1983) The algal flora of selected wet walls in Zion National Park, USA. <em>Nova Hedwigia</em> 38: 765–810.</p>
<p>Kociolek, J.P., Balasubramanian, K., Blanco, S., Coste, M., Ector, L., Liu, Y., Kulikovskiy, M., Lundholm, N., Ludwig, T., Potapova, M., Rimet, F., Sabbe, K., Sala, S., Sar, E., Taylor, J., Van de Vijver, B., Wetzel, C.E., Williams, D.M., Witkowski, A. & Witkowski, J. (2022) DiatomBase. Accessed at: http://www.diatombase.org (accessed 13 July 2022)</p>
<p>Kohler, T.J., Kopalova, K. Van De Vijver, B. and Kociolek, J.P. (2015) The genus <em>Luticola</em> D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species <em>Phytotaxa</em> 208 (2): 103–134. https://doi.org/10.11646/phytotaxa.208.2.1</p>
<p>Kopalová, K., Nedbalová, L., De Haan, M. & Van De Vijver, B. (2011) Description of five new species of the diatom genus <em>Luticola</em> (Bacillariophyta, Diadesmidaceae) found in lakes of James Ross Island (Maritime Antarctic Region). <em>Phytotaxa</em> 27 (1): 44–60. https://doi.org/10.11646/phytotaxa.27.1.5</p>
<p>Levkov, Z., Metzeltin, D. & Pavlov, A. (2013) Luticola and Luticopsis. <em>Diatoms of Europe</em> 7: 1–698.</p>
<p>Lokhande, V., Radhakrishnan, C., Kociolek, J.P., Lowe, R.L. & Karthick, B. (2020) The diatom genus <em>Luticola</em> D.G. Mann (Bacillariophyceae) in the Western Ghats of India. Description of eight new species, systematics, and comments on the biogeography of the genus. <em>European Journal of Phycology</em> 56: 142–158. https://doi.org/10.1080/09670262.2020.1783460</p>
<p>Mann, D.G. (1999) Crossing the Rubicon: the effectiveness of the marine/freshwater interface as a barrier to the migration of diatom germplasm. <em>In:</em> Mayama, S., Idei, M. & Koizumi, I. (Eds.) <em>Proceedings of the 14<sup>th</sup> International Diatom Symposium</em>. Koeltz Scientific Books, Koenigstein, pp. 1–21.</p>
<p>Metzeltin, D., Lange-Bertalot, H. & García-Rodríguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. <em>Diatomologica Iconographia</em> 15: 1–736.</p>
<p>Patrick, R.M. & Reimer, C.W. (1966) <em>Diatoms of the United States, exclusive of Alaska and Hawaii. Volume 1.</em> Monograph No. 13, Academy of Natural Sciences of Philadelphia. 688 pp. https://doi.org/10.2307/1351135</p>
<p>Rabenhorst, L. (1861) Die Algen Europa’s. Decas 119–120. https://doi.org/10.1002/jlac.18611200113</p>
<p>Round, F.E., Crawford, R.W. & Mann, D.G. (1990) <em>The Diatoms. Biology and Morphology of the Genera.</em> Cambridge University Press, Cambridge. 747 pp.</p>
<p>Round, F.E. & Sims, P.A. (1980) The distribution of diatom genera in marine and freshwater environments and some evolutionary considerations. <em>In:</em> Ross, R. (Ed.) <em>Proceedings of the Sixth Symposium of Recent and Fossil Diatoms</em>. Otto Koeltz Scientific Publishers, Hirschberg, pp. 301–320.</p>
<p>Rushforth, S.R., St. Clair, L.L., Leslie, T.A., Thorne, K.H. & Anderson, D.C. (1976) The algal flora of two hanging gardens in Southeastern Utah. <em>Nova Hedwigia</em> 27: 231–323.</p>
<p>Rybak, M., Kochman-Kędziora, N. & Peszek, Ł. (2021) Description of four new terrestrial diatom species from <em>Luticola </em>and <em>Microcostatus </em>genera from South Africa. <em>PhytoKeys</em> 182: 1–26. https://doi.org/10.3897/phytokeys.181.65326</p>
<p>Rybak, M., Witkowski, A., Peszek, L., Kociolek, J.P., Risjani, R., Nguyen, H.D., Zhang, J., Yunianta, Y. Nguyen, V.D., Gastineau, R., Duong, T.T., Rosa, P. & Meleder, V. (2022) Brackish and marine <em>Luticola</em> D.G.Mann (Bacillariophyta) species from the Java Sea and South China Sea coasts with the description of three new species. <em>Phytokeys</em> 183: 115–142.</p>
<p>Simonato, J., Kociolek, J.P., Sala, S.E., Díaz, Y.P. & Núñez-Avellaneda, M. (2020) Three new <em>Luticola</em> species from the Andean-Amazonian transition in Colombia: taxonomy, morphology and preliminary considerations of the biogeography of the genus. <em>Diatom Research </em>35: 377–393<em>. </em>https://doi.org/10.1080/0269249X.2020.1813205</p>
<p>Simonsen, R. (1987) <em>Atlas and Catalogue of the Diatom Types of Friedrich Hustedt.</em> Volume 3: Atlas, Plates 396–772. J. Cramer, Berlin, Stuttgart.</p>
<p>Tsegmid, B. (2020) Diatoms in Yeroo and Kharaa River Basin, Mongolia. <em>Yerunkhiy Boloon Sorilyn Biological Khureelengiin Buteel</em> 32: 1–6.</p>
<p>West, W. & West, G.S. (1911) Freshwater Algae. <em>British Antarctic Expedition 1907–1909</em> 1: 263–298.</p>
<p>Zidarova, R., Levkov, Z. & Van De Vijver, B. (2014) Four new <em>Luticola taxa</em> (Bacillariophyta) from Maritime Antarctica. <em>Phytotaxa</em> 170 (3): 155–168. https://doi.org/10.11646/phytotaxa.170.3.2</p>
<p>Bahls, L.L. (2013) New diatoms (Bacillariophyta) from western North America. <em>Phytotaxa</em> 82 (1): 7–28. https://doi.org/10.11646/phytotaxa.82.1.2</p>
<p>Bąk, M., Kryk, A., Peszek, Ł., Kociolek, J.P., Bemiasa, J. & Bemanaja, E. (2019) New and interesting Luticola species (Bacillariophyta) from the mangroves of Nosy Be Island, NW Madagascar. <em>Oceanological and Hydrobiological Studies </em>48: 13–22<em>. </em>https://doi.org/10.1515/ohs-2019-0002</p>
<p>Bock, W. (1963) Diatomeen extreme trockener Standorte. <em>Nova Hedwigia</em> 5: 199–254.</p>
<p>Bock, W. (1970) Felsen und mauern als diatomeenstandorte.<em> In: </em>Gerloff, J. & Cholnoky, J.B. (eds.) Diatomaceae II. <em>Beihefte zur Nova Hedwigia</em> 31: 395–441. https://doi.org/10.1127/nova.beihefte/31/1970/395</p>
<p>Carlson, G.W.F. (1913) Süsswasser-Algen aus der Antarktis, Süd-Georgien und den Falkland Inseln.<em> In:</em> <em>Wissenschaftliche Ergebnisse der Schwedischen Südpolar-Expedition 1901-1903, unter leitung von Dr. Otto Nordenskjöld. </em>Band 4 (Lieferung 14). Stockholm, Lithographisches Institut des Generalstabs. 94 pp.</p>
<p>Cleve, P.T. (1894) Synopsis of the naviculoid diatoms, Part 1. <em>Kongelige Svenska Vetenskaps-Akademiens Handlingar</em> 26: 1–194.</p>
<p>Das, S.K., Rawat, D.S., Dash, S.S., Banerjee, A., Sinha, B.K. & Singh, P. (2020) Moss-inhabiting diatoms as ecological indicators in Neora Valley National Park (Eastern Himalaya), India. <em>Tropical Ecology </em>61: 226–237. https://doi.org/10.1007/s42965-020-00083-9</p>
<p>Frenguelli, J. (1941) XVI Contribución al conocimiento de las diatomeas argentinas. Diatomeas del Río de la Plata. <em>Revista del Museo de la Plata, Nueva Serie 3, Sección Botánica</em> 15: 213–334.</p>
<p>Hustedt, F. (1964) Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. <em>In: </em>Rabenhorst, L. (Ed.) <em>Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h. Leipzig.</em> 7 (Teil 3, Lief. 4). pp. 557–816.</p>
<p>Johansen, J.R. & Rushforth, S.R. (1981) Diatoms of surface waters and soils of selected oil shale lease areas of Eastern Utah. <em>Nova Hedwigia</em> 34: 333–390.</p>
<p>Johansen, J.R., Rushforth, S.R., Orbendorfer, R., Fungladda, N. & Grimes, J.A. (1983) The algal flora of selected wet walls in Zion National Park, USA. <em>Nova Hedwigia</em> 38: 765–810.</p>
<p>Kociolek, J.P., Balasubramanian, K., Blanco, S., Coste, M., Ector, L., Liu, Y., Kulikovskiy, M., Lundholm, N., Ludwig, T., Potapova, M., Rimet, F., Sabbe, K., Sala, S., Sar, E., Taylor, J., Van de Vijver, B., Wetzel, C.E., Williams, D.M., Witkowski, A. & Witkowski, J. (2022) DiatomBase. Accessed at: http://www.diatombase.org (accessed 13 July 2022)</p>
<p>Kohler, T.J., Kopalova, K. Van De Vijver, B. and Kociolek, J.P. (2015) The genus <em>Luticola</em> D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species <em>Phytotaxa</em> 208 (2): 103–134. https://doi.org/10.11646/phytotaxa.208.2.1</p>
<p>Kopalová, K., Nedbalová, L., De Haan, M. & Van De Vijver, B. (2011) Description of five new species of the diatom genus <em>Luticola</em> (Bacillariophyta, Diadesmidaceae) found in lakes of James Ross Island (Maritime Antarctic Region). <em>Phytotaxa</em> 27 (1): 44–60. https://doi.org/10.11646/phytotaxa.27.1.5</p>
<p>Levkov, Z., Metzeltin, D. & Pavlov, A. (2013) Luticola and Luticopsis. <em>Diatoms of Europe</em> 7: 1–698.</p>
<p>Lokhande, V., Radhakrishnan, C., Kociolek, J.P., Lowe, R.L. & Karthick, B. (2020) The diatom genus <em>Luticola</em> D.G. Mann (Bacillariophyceae) in the Western Ghats of India. Description of eight new species, systematics, and comments on the biogeography of the genus. <em>European Journal of Phycology</em> 56: 142–158. https://doi.org/10.1080/09670262.2020.1783460</p>
<p>Mann, D.G. (1999) Crossing the Rubicon: the effectiveness of the marine/freshwater interface as a barrier to the migration of diatom germplasm. <em>In:</em> Mayama, S., Idei, M. & Koizumi, I. (Eds.) <em>Proceedings of the 14<sup>th</sup> International Diatom Symposium</em>. Koeltz Scientific Books, Koenigstein, pp. 1–21.</p>
<p>Metzeltin, D., Lange-Bertalot, H. & García-Rodríguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. <em>Diatomologica Iconographia</em> 15: 1–736.</p>
<p>Patrick, R.M. & Reimer, C.W. (1966) <em>Diatoms of the United States, exclusive of Alaska and Hawaii. Volume 1.</em> Monograph No. 13, Academy of Natural Sciences of Philadelphia. 688 pp. https://doi.org/10.2307/1351135</p>
<p>Rabenhorst, L. (1861) Die Algen Europa’s. Decas 119–120. https://doi.org/10.1002/jlac.18611200113</p>
<p>Round, F.E., Crawford, R.W. & Mann, D.G. (1990) <em>The Diatoms. Biology and Morphology of the Genera.</em> Cambridge University Press, Cambridge. 747 pp.</p>
<p>Round, F.E. & Sims, P.A. (1980) The distribution of diatom genera in marine and freshwater environments and some evolutionary considerations. <em>In:</em> Ross, R. (Ed.) <em>Proceedings of the Sixth Symposium of Recent and Fossil Diatoms</em>. Otto Koeltz Scientific Publishers, Hirschberg, pp. 301–320.</p>
<p>Rushforth, S.R., St. Clair, L.L., Leslie, T.A., Thorne, K.H. & Anderson, D.C. (1976) The algal flora of two hanging gardens in Southeastern Utah. <em>Nova Hedwigia</em> 27: 231–323.</p>
<p>Rybak, M., Kochman-Kędziora, N. & Peszek, Ł. (2021) Description of four new terrestrial diatom species from <em>Luticola </em>and <em>Microcostatus </em>genera from South Africa. <em>PhytoKeys</em> 182: 1–26. https://doi.org/10.3897/phytokeys.181.65326</p>
<p>Rybak, M., Witkowski, A., Peszek, L., Kociolek, J.P., Risjani, R., Nguyen, H.D., Zhang, J., Yunianta, Y. Nguyen, V.D., Gastineau, R., Duong, T.T., Rosa, P. & Meleder, V. (2022) Brackish and marine <em>Luticola</em> D.G.Mann (Bacillariophyta) species from the Java Sea and South China Sea coasts with the description of three new species. <em>Phytokeys</em> 183: 115–142.</p>
<p>Simonato, J., Kociolek, J.P., Sala, S.E., Díaz, Y.P. & Núñez-Avellaneda, M. (2020) Three new <em>Luticola</em> species from the Andean-Amazonian transition in Colombia: taxonomy, morphology and preliminary considerations of the biogeography of the genus. <em>Diatom Research </em>35: 377–393<em>. </em>https://doi.org/10.1080/0269249X.2020.1813205</p>
<p>Simonsen, R. (1987) <em>Atlas and Catalogue of the Diatom Types of Friedrich Hustedt.</em> Volume 3: Atlas, Plates 396–772. J. Cramer, Berlin, Stuttgart.</p>
<p>Tsegmid, B. (2020) Diatoms in Yeroo and Kharaa River Basin, Mongolia. <em>Yerunkhiy Boloon Sorilyn Biological Khureelengiin Buteel</em> 32: 1–6.</p>
<p>West, W. & West, G.S. (1911) Freshwater Algae. <em>British Antarctic Expedition 1907–1909</em> 1: 263–298.</p>
<p>Zidarova, R., Levkov, Z. & Van De Vijver, B. (2014) Four new <em>Luticola taxa</em> (Bacillariophyta) from Maritime Antarctica. <em>Phytotaxa</em> 170 (3): 155–168. https://doi.org/10.11646/phytotaxa.170.3.2</p>