Stauroneis sacajaweae Bahls 2012, sp. nov.

• Main Author: Bahls, Loren
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Chromista; Bacillariophyta; Bacillariophyceae; Naviculales; Stauroneidaceae; Stauroneis; Stauroneis sacajaweae; Arctic; Antarctic; Cramer; Loren; Northern Rockies; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.5067401; https://zenodo.org/record/5067401

Stauroneis sacajaweae Bahls, sp. nov. (Figs 9–15) Type: — USA. Montana: Spring at base of Square Butte, tributary of Cowboy Creek, Chouteau County, 47.4829 o N, 110.2380 o W, 1400 m elevation, collected from rocks and sediment by Loren Bahls, 22 May 1999. MDC sample 179801; holotype slide MDC B1-22-5, Figs 9, 11–15. Valves lanceolate with gradually attenuated subrostrate apices. A deep pseudoseptum occupies each apex (Fig. 15). Valve length 54–80 µm; valve width 10.8–14.7 µm. Raphe lateral, becoming filiform towards proximal ends, which are bent to one side and tipped with weakly inflated pores. Distal raphe ends hooked in a direction opposite that of proximal ends. Axial area c 3 x wider than raphe and widens gradually towards central area. Central stauros broad, shaped like a bow tie. Striae strongly radiate throughout, 23–25 in 10 µm. Areolae in striae 18–22 in 10 µm. Etymology :—This species is named after the Lemhi Shoshone woman, Sacajawea (1788–1812?), who served as guide and interpreter for Lewis and Clark (Mann 2004). Observations: — Stauroneis sacajaweae was reported by Bahls (2010: 155) as S. subhyperborea Van de Vijver & Lange-Bertalot (2004: 72). However, the Montana specimens have a wider stauros and distinctly higher stria and areola densities than S. subhyperborea . Besides the type locality—which it shares with S. clarkii — S. sacajaweae has been collected from a seep along the Going-To-The-Sun Road in Glacier National Park, Montana, 48.7381 o N, 113.7456 o W. : Published as part of Bahls, Loren, 2012, Five new species of Stauroneis (Bacillariophyta, Stauroneidaceae) from the northern Rocky Mountains, USA, pp. 1-8 in Phytotaxa 67 (1) on page 4, DOI: 10.11646/phytotaxa.67.1.1, http://zenodo.org/record/5065934 : {"references": ["Mann, J. W. W. (2004) Sacajawea's people: the Lemhi Shoshones and the Salmon River country. University of Nebraska Press, Lincoln.", "Bahls, L. (2010) Stauroneis in the Northern Rockies - 50 species of Stauroneis sensu stricto from western Montana, northern Idaho, northeastern Washington and southwestern Alberta, including 16 species described as new. Vol. 4 In: Bahls, L. (Ed.), Northwest Diatoms, Montana Diatom Collection, Helena, 179 pp.", "Van de Vijver, B., Beyens, L. & Lange-Bertalot, H. (2004) The Genus Stauroneis in the Arctic and (Sub-) Antarctic Regions. Bibliotheca Diatomologica, Band 51. J. Cramer, Berlin, 317 pp."]}