taxonID	type	description	language	source
68318782FFADFFA82DD1BB0EFC6770A2.taxon	description	Description: Valves moderately dorsiventral, lanceolate, dorsal margin moderately arched, ventral margin straight or very slightly convex. Ends not protracted and bluntly rounded. Length 51.3 – 83.2 μm, breadth 11.0 – 13.2 μm, maximal length / breadth ratio 6.4 (n = 46). Axial area moderately narrow, linear or slightly tapering towards the ends, both branches form an obtuse angle to each other. Central area slightly distinct on the dorsal side, more pronounced on the ventral side. Raphe not or only slightly ventrally displaced, distinctly to strongly lateral, becoming filiform near the distal and reverse-lateral near the proximal ends. Striae moderately to strongly radiate, becoming more radiate near the ends, distinctly, however very finely punctate. Commonly 4, sometimes also 3 – 5 isolated stigmata on the ventral side of the central nodule. In the SEM, 3 – 6 large elliptical stigma foramina and 1 – 4 smaller round stigma foramina. The small round pore foramina are arranged irregularly. Parallel arranged pore field alveoli only on the valve end. The margins of the stigma alveoli are provided with teeth-like structures. Striae in the middle 8 – 9 / 10 μm (dorsal) and 10 – 12 (ventral), becoming up to 14 / 10 μm towards the ends, puncta 24 – 28 / 10 μm.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFADFFA82DD1BB0EFC6770A2.taxon	materials_examined	Type: — TURKEY, Sakarbaşı, Eskişehir (GPS 39 ° 21 ’ 10.04 ’’ N, 31 ° 03 ’ 33.24 ’’ E), 872 m a. s. l., collector: Cüneyt Nadir Solak 24.11.2019. Holotype: slide number 27354 (holotype designated here on Fig. 1) in the collection of Andrzej Witkowski the University of Szczecin. Isotype: — Slide no. TR _ ESK _ Sakarbası _ Nov 2019 _ EPF deposited at Kütahya Dumlupınar University (Turkey).	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFADFFA82DD1BB0EFC6770A2.taxon	etymology	Etymology: — The species was dedicated to scuba diver Mr. Erkan BALK who helped to collect the samples.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFADFFA82DD1BB0EFC6770A2.taxon	diagnosis	Differential diagnosis: — Cymbella simonsenii Krammer in Krammer & Lange-Bertalot (1985: 33), C. pervarians Krammer (2002: 58), C. percymbiformis Krammer (2002: 75), C. vulgata Krammer (2002: 55), C. alpestris Krammer (2002: 52) and C. perparva Krammer (2002: 38) are similar taxa. Among them, Cymbella simonsenii and C. pervarians are the most similar taxa with similar outline and ending. However, C. simonsenii and C. percymbiformis (> 14.0 µm) are wider while, C. pervarians is narrower than C. balkii (8.0 – 12.6 µm and 11.0 – 13.2 µm respectively). C. balkii has higher stigmata number (3 – 6) than C. pervarians and C. vulgata (1 isolated stigma on the ventral side). Striae density is higher than C. alpestris (<8) and also, bigger than C. vulgata and C. perparva (> 50 µm).	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFADFFA82DD1BB0EFC6770A2.taxon	distribution	Distribution: — Observed only in the type locality.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFADFFA82DD1BB0EFC6770A2.taxon	biology_ecology	Ecology: — The water temperature ranged from 21.4 – 22.9 oC, pH was 7.8 – 7.9, dissolved oxygen (DO) was 5.2 – 6.1 mg / L and electrolytic conductivity was 545 – 575 µS / cm- 1. Associated diatom flora: — Cymbella cymbiformis (21.2 %), Encyonopsis minuta Krammer & E. Reichardt in Krammer (1997: 95) (10.5 %), Amphora pediculus (Kützing) Grunow [described as Cymbella pediculus Kützing (1844: 80)] (5.3 %), Navicula cryptotenella Lange-Bertalot in Krammer & Lange-Bertalot (1985: 62) (4.1 %), Eunotia arcubus Nörpel & Lange-Bertalot in Lange-Bertalot (1993: 24) (3.8 %), Nitzschia gracilis Hantzsch (1860: 40) (2.9 %), Staurosira construens Ehrenberg (1843: 424) (2.5 %), Pseudostaurosira brevistriata (Grunow) D. M. Williams & Round (1988: 276) (2.2 %), Staurosirella pinnata (Ehrenberg) D. M. Williams & Round (1988: 274) (1.9 %), unidentified species of Achnanthidium Kützing, Brachysira Kützing, Cocconeis Ehrenberg, Pseudostaurosira D. M. Williams & Round and Sellaphora Kützing were the most frequent taxa in the sample.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	description	Description: Valves slightly to moderately dorsiventral, lanceolate, dorsal margin distinctly convex, ventral margin slightly tumid. Ends indistinctly protracted and rounded (Table 2). Length 31.8 – 45.8 μm, breadth 7.4 – 9.0 μm, maximal length / breadth ratio of the normal cells 5.3. Axial area narrow, linear, central area absent. Raphe slightly ventrally displaced, lateral, becoming filiform near the distal and filiform to weakly reverse-lateral near the proximal ends [type “ e ” according to Krammer (2002: Fig. 67: 3)]. Striae parallel at the central area, becoming slightly radiate near the ends, finely punctate. A distinct isolated 1 – 2 stigmata are visible just at the end of the central stria on the ventral side. In the SEM, 1 – 2 slit-like stigma foramina. Parallel arranged pore field alveoli only on the valve end. The margins of the stigma alveoli are provided with teeth-like structures. Striae in the middle portion (dorsal and ventral) 9 – 10 / 10 μm, rising to 13 – 15 / 10 μm towards the ends, puncta 24 – 28 / 10 μm.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	materials_examined	Type: — TURKEY, Sakarbaşı, Eskişehir (GPS 39 ° 21 ’ 10.04 ’’ N, 31 ° 03 ’ 33.24 ’’ E), 872 m a. s. l., collector: Cüneyt Nadir Solak 24.11.2019. Holotype: slide number 27354 (holotype designated here on Fig. 1) in the collection of Andrzej Witkowski at the University of Szczecin. Isotype: — Slide no. TR _ ESK _ Sakarbası _ Nov 2019 _ EPF deposited at Kütahya Dumlupınar University (Turkey).	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	etymology	Etymology: — The species was dedicated to Prof. Dr. Sedat YERLİ who is a hydrobiologist in Turkey.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	diagnosis	Differential diagnosis: — Cymbella parva (W. Smith) Kirchner in Cohn (1878: 188), C. perparva Krammer (2002: 37) and C. parviformis Krammer (2002: 38) and Cymbella tridentina H. Lange-Bertalot, M. Cantonati & A. Scalfi in Cantonati et al. (2010: 778) are similar taxa. Among them, C. parva is the most similar taxon in all related ones with similar outline. However, length / width ratio is higher in C. yerlii than the other taxa. In C. parviformis, striae density in dorsal and ventral sides are lower than C. yerlii. Regarding to the apices, the shape is non protracted and narrowly rounded in C. parva and C. parviformis while, indistindtly protracted and rounded in C. yerlii and C. parviformis.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	distribution	Distribution: — Observed only in the type locality.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
68318782FFABFFA42DD1BA3CFD867286.taxon	biology_ecology	Ecology: — The water temperature ranged from 21.4 – 22.9 oC, pH was 7.8 – 7.9, dissolved oxygen (DO) was 5.2 – 6.1 mg / L and electrolytic conductivity was 545 – 575 µS / cm- 1. Associated diatom flora: — Cymbella cymbiformis (21.2 %), Encyonopsis minuta Krammer & E. Reichardt in Krammer (1997: 95) (10.5 %), Amphora pediculus (Kützing) Grunow [described as Cymbella pediculus Kützing (1844: 80)] (5.3 %), Navicula cryptotenella Lange-Bertalot in Krammer & Lange-Bertalot (1985: 62) (4.1 %), Eunotia arcubus Nörpel & Lange-Bertalot in Lange-Bertalot (1993: 24) (3.8 %), Nitzschia gracilis Hantzsch (1860: 40) (2.9 %), Staurosira construens Ehrenberg (1843: 424) (2.5 %), Pseudostaurosira brevistriata (Grunow) D. M. Williams & Round (1988: 276) (2.2 %), Staurosirella pinnata (Ehrenberg) D. M. Williams & Round (1988: 274) (1.9 %), unidentified species of Brachysira Kützing, Cocconeis Ehrenberg, Pseudostaurosira D. M. Williams & Round and Sellaphora Kützing were the most frequent taxa in the sample.	en	Solak, Cüneyt Nadir, Balkis-Ozdelice, Neslihan, Yilmaz, Elif, Durmus, Turgay, Blanco, Saúl (2021): Description of two new Cymbella (Bacillariophyta) species from Sakarbaşı spring, Turkey. Phytotaxa 484 (2): 195-206, DOI: 10.11646/phytotaxa.484.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.484.2.4
