Published May 5, 2023 | Version v1

TABLE 1 in Gomphonema rajaguruii sp. nov., a new diatom (Bacillariophyceae) species from the Western Ghats, India

  • 1. Biodiversity & Palaeobiology Group, Agharkar Research Institute, Pune 411004 India
  • 2. Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA

Description

TABLE 1. Comparison between the morphologically similar species and Gomphonema rajaguruii sp. nov. from the different sources. (— indicates unknown)

Features / SpeciesGomphonema rajaguruii sp. novGomphonema kallarense Pardhi et al. 2020Gomphonema lujanense E. Reichardt & Maidana 2008Gomphonema pseudointermedium E. Reichardt 2008Gomphonema zellense E. Reichardt 1999Gomphonema supertergestinum E. Reichardt 2009Gomphonema irroratum Hustedt 1945
Valve length (μm)45.5–71.032.9–46.6176.4–52.628.0–55.027.0–60.022.0–52.024.0–37.0
Valve width (μm)8.8–12.86.8–9.15.6–9.06.6–7.79.2–11.07.0–9.05.5–7.5
Valve shapeLanceolate - RhombicLanceolate-clavateLanceolate-clavateClavateClavateLanceolate to ellipticClavate
Head poleSlightly broadly rounded towards poleBroadly rounded, almost flat, slight capitateBluntly rounded or truncate with small pore fieldObtusely roundedRoundedBroadly roundedBroadly rounded
Foot poleNarrowly rounded, elongated towards poleNarrow roundedNarrow roundedNarrow roundedRoundedNarrowly roundedRounded
Striae (10 μm)9–10 in central area 10–12 towards poles9–137–1210–118–109–1214–16
Striae pattern (Head to Centre)Slightly radiate from head pole to central valveSlight radiateModerately radiateStrongly radiateRadiateRadiateStrongly Radiate
Striae pattern (Centre to Foot)Strongly radiate towards the foot poleRadiateRadiateWeakly radiateSlightly radiateParallelRadiate
Areolae (10 μm)60–7060–70——22–26—30–35
Areolae patternBiseriate, slit-shaped, aligned alternativelyBiseriate, slit-shaped, aligned alternativelyBiseriate, slit-shaped, aligned alternativelyMostly biseriate, slit-shapedUniseriate and Partially biseriateBiseriate, RoundBiseriate, round
RapheWeakly undulateLateral to undulateLateralLateral fissure somewhat undulateNarrow, LateralLateral or filiformLateral, undulated
Axial area (size)Slightly broader, linear to lanceolateBroad to narrow, lanceolateModerately narrow, linear to lanceolateNarrow, linearNarrow, linearNarrow, linearNarrow, linear to lanceolate
Central areaDistinct, smallDistinct, smallUnilaterally widened with one greatly shortened striaSmallLarge to nearly rectangularDistinct, Extended to the edge, Very short striaeSmall, irregular to elliptic
PseudoseptumPresentPresent——AbsentPresent—
Stigma ExternallyOvalRoundRoundRoundRoundRound1
HabitatWet wallStreamRiverLakeLakeLakeLake
Type localityMahabaleshwar, Maharashtra, IndiaKallar stream, Kerala, IndiaLujan river, ArgentinaInley Lake, BurmaZellsee Lake, GermanyBrandenburg, GermanyBalkan Highlands, Balkan Peninsula
ReferencePresent studyPardhi et al. (2020)Reichardt (2008)Reichardt (2008)Reichardt (1999)Reichardt (2009)Hustedt (1945)

Notes

Published as part of Yogeshwaran, Murugesan, Kociolek, John Patrick & Karthick, Balasubramanian, 2023, Gomphonema rajaguruii sp. nov., a new diatom (Bacillariophyceae) species from the Western Ghats, India, pp. 203 in Phytotaxa 595 (2) on page 203, DOI: 10.11646/phytotaxa.595.2.6, http://zenodo.org/record/7905892

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Journal article: 10.11646/phytotaxa.595.2.6 (DOI)
Journal article: urn:lsid:plazi.org:pub:FF98FFF3731DFFA2FFB9FFBA2A0C790D (LSID)
Journal article: http://publication.plazi.org/id/FF98FFF3731DFFA2FFB9FFBA2A0C790D (URL)
Journal article: http://zenodo.org/record/7905892 (URL)

References

  • Pardhi, S., Vigneshwaran, A., Karthick, B., Kociolek, J. P., Glushchenko, A. & Kulikovskiy, M. (2020) Morphological investigation and description of two new Gomphonema Ehrenberg (Bacillariophyta) species from India and Vietnam with biogeographical comments. Phytotaxa 468 (2): 175 - 189. https: // doi. org / 10.11646 / phytotaxa. 468.2.2
  • Reichardt, E. (2008) Gomphonema intermedium Hustedt sowie drei neue, ahnliche Arten. Diatom Research 23 (1): 105 - 115. https: // doi. org / 10.1080 / 0269249 X. 2008.9705740
  • Reichardt, E. (1999) Zur Revision der Gattung Gomphonema. Die Arten um G. affine / insigne, G. angustatum / micropus, G. acuminatum sowie gomphonemoide Diatomeen aus dem Oberoligozan in Bohmen. Iconographia Diatomologica 8: 1 - 202.
  • Reichardt, E. (2009) Silikatauswuchse an den inneren Stigmenoffnungen bei Gomphonema - Arten. Diatom Research 24 (1): 159 - 173. https: // doi. org / 10.1080 / 0269249 X. 2009.9705788
  • Hustedt, F. (1945) Diatomeen aus Seen und Quellgebieten der Balkan-Halbinsel. Archiv fur Hydrobiologie 40 (4): 867 - 973.