Lindavia biswashanti Mohan & Stone 2018, spec. nov.
Creators: name: Mohan, Joseph
name: Stone, Jeffery R.
name: Nicholson, Kirsten
name: Neumann, Klaus
name: Dowling, Carolyn
name: Sharma, Subodh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Thalassiosirales
Stephanodiscaceae
Lindavia
Lindavia biswashanti

description: Lindavia biswashanti Mohan & Stone spec. nov. (Figs 2, 3)
Valves are discoid, 4–13 μm in diameter. Valve face is separated into a hyaline central area and a marginal area marked by radial striae. The central area exhibits radial undulation; three alternating depressed wedges are bounded by three raised wedges. Central area comprises 2/3 of the valve face area (Fig. 2). Doubly punctate fascicles are distributed 13– 20 in 10 μm. Internally the fascicles perforate into alveolar chambers with a single round opening.A single fultoportula is present on the valve face near the center of the valve. Three to five mantle fultoportulae are evenly distributed around the margin. Externally the valve face and mantle fultoportulae are simple round perforations. Internally both types of fultoportulae consist of a central pore with circular raised sides. On opposite sides of the central pore exist two crescent-shaped satellite pores both with raised edges (Figs. 3, E & F). Internally the mantle fultoportulae reside on costae (Figs 3, D & F). A simple, slightly raised rimoportula is exhibited internally (Figs. 3, D & F). Externally the rimoportula is inconspicuous (Figs. 3, A & B).
Type: — NEPAL. Province No. 1 (Solukhumbu District): Sagarmatha National Park, Gokyo Cho, 4750 m, N 27.953863, E 86.692920, collected by K. Nicholson on 02 May 2016, General Collection no. 36357 ANSP! (Holotype, Fig 2, C is the encircled holotype specimen)
Etymology: —The lake from which Lindavia biswashanti has been recovered is considered to be sacred by Buddhists and Hindus. As such, L. biswashanti is named in respect for the Tengboche monks; biswashanti means ‘world peace’ in the Nepali language and is their message to the world.
Remarks:— Lindavia biswashanti differs from Pantocsekiella hispanica (K.T. Kiss, E. Hegewald et Ács) K.T. Kiss et Ács (2016: 66) by lacking round nodes on the undulations on the central area. P. hispanica exhibits three areolae per fascicle whereas L. biswashanti has two per fascicle. P. hispanica also exhibits greater numbers of mantel fultoportulae than L. biswashanti (Table 1). Pantocsekiella ocellata (Pantocsek) K.T. Kiss et Ács (2016: 62) differs most notably by exhibiting papillae and orbiculi depressi in the central area. L. biswashanti lacks these distinct features. P. ocellata also show greater numbers of areolae per fascicle and greater number of mantel fultoportulae (Table 1). Pantoscekiella tripartita (Håkansson) K.T. Kiss et Ács (2016: 69) differs from L. biswashanti by having additional protrusions in the central area and exhibiting spinules on the interfascicles marking the interface of the valve face and mantel (Håkansson, 2002). L. biswashanti differs from L. antiqua var. minor by having hyaline undulations in the central area whereas L. antiqua var. minor is described as having delicately punctate depressions in the central area. Therefore, we suggest that the specimen identified by Misra et al. (2009) Plate 1, Fig. 1 is L. bishwashanti not L. antiqua var. minor because it lacks punctate depressions.
description: Published as part of Mohan, Joseph, Stone, Jeffery R., Nicholson, Kirsten, Neumann, Klaus, Dowling, Carolyn & Sharma, Subodh, 2018, Lindavia biswashanti, a new diatom species (Bacillariophyta) from Gokyo Cho, Himalayan Range, Nepal, pp. 101-107 in Phytotaxa 364 (1) on page 102, DOI: 10.11646/phytotaxa.364.1.7, http://zenodo.org/record/13703969