Achnanthidium barlasii C.N.Solak, Wojtal, S.Blanco, Peszek & M.Rybak, 2022
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publication ID |
https://dx.doi.org/10.5091/plecevo.89304 |
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persistent identifier |
https://treatment.plazi.org/id/B1B42101-9452-5DAA-B6AD-C0044ACB796D |
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treatment provided by |
by Pensoft |
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scientific name |
Achnanthidium barlasii C.N.Solak, Wojtal, S.Blanco, Peszek & M.Rybak |
| status |
sp. nov. |
Achnanthidium barlasii C.N.Solak, Wojtal, S.Blanco, Peszek & M.Rybak sp. nov.
Figs 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4
Type.
TURKEY • Lake Salda ; 37°33 ’37.88” N, 29°43 ’1.94” E; 1316 m a.s.l.; 14 Oct. 2017; Cüneyt Nadir Solak; holotype: slide n° 27295, valves illustrated here in Fig. 2E & V View Figure 2 : deposited in the collection of Andrzej Witkowski at the University of Szczecin, Poland; isotype: slide n° TR GoogleMaps _ BRD_ Salda Lake _EPF_3_ Oct2017: deposited at Kütahya Dumlupınar University, Turkey .
Description.
Valves linear to lanceolate, with parallel margins. Apices protracted (Fig. 2 View Figure 2 ). Valve dimensions (n = 75): valve length 12.0-21.5 µm, valve width 2-3 µm (Table 1 View Table 1 ). Raphe valve (Figs 2A, C-S View Figure 2 & 3A-H View Figure 3 ) linear with parallel margins. Axial area linear, gradually widening (Fig. 3A View Figure 3 ). Central area inconspicuous, delimited by 1-3 more distantly spaced striae composed of three, rounded areolae (Fig. 3B, F View Figure 3 ). Raphe straight, expanding at both central endings and terminal raphe fissures. Central raphe endings straight, terminal raphe fissures short (Fig. 2B-D View Figure 2 ). Transapical striae arched, strongly radiate throughout entire valve, more densely spaced near apices. Striae composed of 3 (1-2 at apices) rounded to rectangular areolae (Fig. 2B-D View Figure 2 ). Internally, central raphe endings terminating on a raised central nodule, weakly deflected in opposite directions (Fig. 2E-F View Figure 2 ). Rapheless valve (Figs 2T View Figure 2 -AJ & 4A-H) lanceolate with convex margins. Central area absent (Fig. 3A, B, F View Figure 3 ). Transapical striae radiate and evenly spaced throughout the entire valve, 27-30 in 10 µm. Striae composed of 4 (2-3 at the apices) rounded areolae (Fig. 3B-D View Figure 3 ).
Etymology.
The species is named after our colleague Prof. Dr Murat Barlas, a hydrobiologist specialised in freshwater ecology in Turkey.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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