Morphological and molecular characterization of Halamphora vantushpaensis (Bacillariophyceae, Amphipleuraceae), a new diatom species widely dispersed on the shores of the soda Lake Van (Türkiye) Author Yılmaz, Elif 0000-0001-7939-1814 Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16 A, PL 70 – 383 Poland Author Gastineau, Romain 0000-0001-8661-5118 Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16 A, PL 70 – 383 Poland Author Solak, Cüneyt Nadir 0000-0003-2334-4271 Department of Biology, Faculty of Science & Art, Dumlupınar University, 43000 Kütahya, Turkiye Author Górecka, Ewa 0000-0003-0590-7480 Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16 A, PL 70 – 383 Poland Author Trobajo, Rosa 0000-0001-9498-3797 Marine and Continental Waters, Institute for Food and Agricultural Research and Technology (IRTA), Crta de Poble Nou Km 5.5, E- 43540 La Ràpita, Catalunya, Spain Author Turmel, Monique 0000-0001-7060-035X Département de biochimie, de microbiologie et de bio-Informatique, Institut de Biologie Intégrativeet des Systèmes, Université Laval, Québec, QC, Canada Author Lemieux, Claude 0000-0001-9580-8042 Département de biochimie, de microbiologie et de bio-Informatique, Institut de Biologie Intégrativeet des Systèmes, Université Laval, Québec, QC, Canada Author Otis, Christian 0000-0001-9680-5863 Département de biochimie, de microbiologie et de bio-Informatique, Institut de Biologie Intégrativeet des Systèmes, Université Laval, Québec, QC, Canada Author Witkowski, Andrzej 0000-0003-1714-218X Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16 A, PL 70 – 383 Poland Author Mann, David G. 0000-0003-0522-6802 Marine and Continental Waters, Institute for Food and Agricultural Research and Technology (IRTA), Crta de Poble Nou Km 5.5, E- 43540 La Ràpita, Catalunya, Spain & Plateforme d’Analyse Génomique, Institut de biologie intégrative et des systèmes, Université Laval, Québec, QC, Canada text PhytoKeys 2024 2024-11-15 249 95 114 journal article 305203 10.3897/phytokeys.249.133205 05266430-08fa-4113-acb4-da6c73efa958 PMC11584902 39582963

Table 1. Morphological characteristics of Halamphora vantushpaensis sp. nov. and similar Halamphora (-- represents no information) (for H. vantushpaensis measurements, n = 35).

	Halamphora vantushpaensis sp. nov.	H. atacamana	H. borealis	H. gasseae	H. salinicola	H. sardiniensis	H. thermalis
Valve length (µm)	24.0–42.0	29.0–45.0	19.0–40.0	19.0–35.0	20.0–34.0	13.0–27.5	18.0–40.0
Valve width (µm)	4.0–5.0	4.5–8.0	3.0–4.0	3.5–4.5	2.5–3.7	3.0–4.5	4.0–6.5
Stria density (in 10 µm)	27–32	25–28	20–24	20–24	21–26	36–42	26–36
Valve outline	semi-lanceolate with arched dorsal margin, slightly tumid ventral margin	semi-lanceolate, arched dorsal margin, concave or straight to weakly tumid ventral margin	semi-lanceolate, arched dorsal margin, straight to weakly tumid ventral margin	semi-lanceolate, smoothly arched dorsal margin, straight to weakly concave ventral margin	semi-lanceolate, smoothly arched dorsal margin, straight to weakly concave ventral margin	semi-lanceolate, strongly arched dorsal margin and straight to slightly concave ventral margin	semi-lanceolate to lanceolate, smoothly arched dorsal margin, straight to slightly tumid ventral margin
Valve ending	subprotracted in smaller specimens; protracted, capitate in larger specimens and ventrally bent	slightly subprotracted and ventrally bent	protracted, capitate and slightly ventrally bent	shortly protracted and capitate	shortly protracted and capitate	shortly protracted and capitate	attenuate
Raphe ledge	narrow, arched with equal width throughout	narrow, equal width throughout and dorsally elevated from the valve face	narrow, linear	--	narrow, expanded on both valve sides	narrow, expanded on both valve sides	narrow, equal width throughout
Axial area	narrow, widening ventrally	narrow, widening ventrally	narrow, widening ventrally	narrow, widening ventrally	narrow, widening ventrally	narrow, widening ventrally	narrow, slightly dorsally bent
References	in this study	Levkov 2009	Levkov 2009	Levkov 2009	Levkov 2009	Levkov 2009	Levkov 2009