taxonID	type	description	language	source
0F048322FFF6DD3BFF7DFF37FC43FADD.taxon	materials_examined	Type: — Platichthys krammeri Lange-Bertalot & Kulikovskiy, sp. nov. (see below).	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF6DD3BFF7DFF37FC43FADD.taxon	etymology	Etymology: — the Greek name of the genus is similar to the scientific name of the flat-fish Platichthys flesus (flounder) and refers to the roughly comparable shape and symmetry of the valve and frustules respectively.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF6DD3BFF7DFF37FC43FADD.taxon	discussion	Comments: — One salient feature of Platichthys gen. nov. is the stabilization of very thin cell walls by, as seen as alternating wave crests and wave troughs in the SEM, whereas the crests can easily be mistaken for prolongations of the fibulae with LM microscopy. This is known from the “ light construction ” of the valves of Surirella (Krammer & Lange-Bertalot 2004) and is also observed in Platichthys gen. nov. Striae- and areolae- densities are uncommonly high in comparison with other canal raphe diatom genera, except Entomoneis.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF6DD3FFF7DFA46FA89FEEF.taxon	materials_examined	Type: — GALAPAGOS ISLANDS. Island Isabela: Diablas Lagoon, littoral, a sample from the Late Holocene sediment core, a sample from the Late Holocne sediment core collected in 2005, subsampled by A Seddon, 2007 (holotype: individual in slide no. MCCDRS 7862 at the Charles Darwin Research Station, Puerto Ayora, Galápagos, illustrated in Fig. 4).	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF6DD3FFF7DFA46FA89FEEF.taxon	etymology	Etymology: — this species is named in honor of Charles Darwin.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF6DD3FFF7DFA46FA89FEEF.taxon	biology_ecology	Ecology: — so far only found at the type habitat from a lagoon that is changing in salinity from brackish-water to marine close to the inlet of the sea water. The new species occurred abundantly and was very well preserved and associated with brackish-water to marine representatives of Navicula Bory (1822: 128), Amphora Ehrenberg ex Kützing (1844: 107), Fragilaria Lyngbye (1819: 182) sensu lato and Nitzschia. All were benthic, halophilouseuryhaline species, containing genera typifying isolation basins in the littoral zone (Seddon et al. 2011 a, 2014 a).	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF2DD3FFF7DFE59FAE2F993.taxon	materials_examined	Type: — CHILE. Province of Chacabuco: Chacabuco Bano, Andes Mountains, on wet grass in the efflux of the thermal spring, G. H. Schwabe, 1940 (holotype: FR! Individual in SEM stub no. A 77 in coll. Lange-Bertalot, illustrated in Fig. 50. Isotype: KASSEL! slide no. 415 ex collection G. H. Schwabe).	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF2DD3FFF7DFE59FAE2F993.taxon	etymology	Etymology: — this species dedicated to Dr. Kurt Krammer.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF2DD3FFF7DFE59FAE2F993.taxon	biology_ecology	Ecology: — so far only found at the type location in thermal, freshwater spring. Associated with a rather scarce number of specimens of the new species are: Achnanthes inflata (Kützing) Grunow (1867: 7; basionym Stauroneis inflata Kützing 1844: 105), which is generally found in springs of extra-tropical South America (Lange-Bertalot personal unpublished observations); Caloneis spp., at least three unidentified taxa; Halamphora sp.; Diploneis spp. small and larger sized unidentified forms; Achnanthes exigua Grunow in Cleve & Grunow (1880: 21), with moderately high abundance; Nitzschia linearis (Agardh) W. Smith (1853: 39) or aff. linearis, Nitzschia spp. moderately abundant; Stauroneis sp., naviculoid specimens of an unknown genus, Planothidium sp.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
0F048322FFF2DD3FFF7DFE59FAE2F993.taxon	discussion	Comments: — The new genus is represented by two species that have been discovered and characterized in LM and EM. Though similar in gross morphology, the two species show differences in both LM and EM, which allow them to be distinguished. Although the longitudinal frustule size ranges of both taxa overlap (23 – 33 μm in P. darwiniana and 27 – 35 μm in P. krammeri), they differ in the width of frustules and valves, as P. krammeri has broader frustules (9 – 10 μm), but narrower valves (3.5 – 4.0) than P. darwiniana (7 – 8 μm and 4.0 – 5.5 μm, respectively). Platichthys darwiniana and P. krammeri also differ in ultrastructural characteristics. Whereas the stria density in P. darwiniana is 48 – 61 in 10 μm, in P. krammeri it is 60 – 70 in 10 μm. The two species also differ with respect to the areola density within a stria, with 56 to 72 in 10 μm being found in P. darwiniana and ca. 80 in 10 μm in P. krammeri.	en	Lange-Bertalot, Horst, Witkowski, Andrzej, Seddon, Maxim S. Kulikovskiy Alistair W. R., Kociolek, John P. (2015): Taxonomy, frustular morphology and systematics of Platichthys, a new genus of canal raphe bearing diatoms within the Entomoneidaceae. Phytotaxa 236 (2): 135-149, DOI: 10.11646/phytotaxa.236.2.3, URL: http://dx.doi.org/10.11646/phytotaxa.236.2.3
