Luticola permuticopsis Kopalova & Van de Vijver 2011, sp. nov.

• Main Authors: Kopalová, Kateŕina, Nedbalová, Linda, Haan, Myriam De, Vijver, Bart Van De
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Chromista; Bacillariophyta; Bacillariophyceae; Naviculales; Diadesmidaceae; Luticola; Luticola permuticopsis; Recta; Ross Island; Ulu Peninsula; Antarc*; Antarctica; James Ross Island
• Online Access: https://zenodo.org/record/4923678; https://doi.org/10.5281/zenodo.4923678

Luticola permuticopsis Kopalová & Van de Vijver, sp. nov. (Figs 51–72) Valvae lineares-lanceolatae ad lineares-ellipticae marginibus distincte convexis apicibusque late rotundatis, stricte capitatis. Longitudo 18.5–26.0 µm, latitudo 7.3–9.2 µm. Area axialis moderate angusta, linearis, paene non dilatata in aream centralem apicesque. Area centralis formans staurum rectangularem ad cuneatum, marginatum serie una areolarum rotundatarum magnarum. Stigma paene rotundata adest in extremo striae curate vel isolata inter mediam partem valvae marginesque. Raphe filiformis, recta, terminationibus proximalibus unilateraliter clare deflexis, poris centralibus leviter expansis. Fissurae distales deflectis, clare expansae. Striae transapicales fortiter radiatae omnino, 18–22 in 10 µm. Areolae 3–6 per striam, moderate magnae. Type:— ANTARCTICA. James Ross Island, Ulu Peninsula, Vondra IV Lake, sample D44, leg. L. Nedbalova, coll. date 19/01/2009, slide no. BR-4243 (holotype BR, Fig. 55 is the encircled holotype specimen), slide PLP-191 (isotype University of Antwerp, Belgium), BRM-ZU8/09 (isotype BRM). Valves linear-lanceolate to linear-elliptic with distinctly convex margins and broadly rounded, distinctly capitate apices (Figs 51–66). Valve length 18.5–26.0 µ m, valve width 7.3–9.2 µ m (n=15). Axial area moderately narrow, linear (Figs 67, 68), almost not widening towards apices (Fig. 72) and central area (Fig. 71). Central area forming a rectangular to wedge-shaped stauros, bordered by one series of large, rounded areolae. One solitary, almost rounded stigma present, usually at end of shortened stria, composed of 3 small, rounded areolae (Fig. 67) or isolated halfway between valve centre and margin (Fig. 71). External raphe branches straight with unilaterally clearly deflected, slightly expanded proximal raphe endings. Distal raphe fissures clearly elongated, deflected. Transapical striae rather strongly radiate throughout entire valve, composes of 3–6 moderately large, rounded areolae, 18–22 in 10 µm. Near central ...