A new species of Arctodiaptomus Kiefer, 1932 (Copepoda: Diaptomidae) from the Kumaun Himalaya of India

Authors

  • Shaikhom Inaotombi Environmental Biology Lab., ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Nainital, Uttarakhand, 263136 India.
  • Debajit Sarma Environmental Biology Lab., ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Nainital, Uttarakhand, 263136 India.

DOI:

https://doi.org/10.11609/jott.8032.16.12.26251-26263

Keywords:

Arctodiaptomus kumaunensis sp. nov., Calanoida, carotenoids, diaptomids, Maheshwar Kund, morphology, photoprotectant, plankton, western Himalaya

Abstract

A new species of the freshwater copepod genus Arctodiaptomus is described from a high-altitude lake of Kumaun Himalaya. The undescribed species differs from their congeners by the presence of a strong comb-shape denticulated spine at the antepenultimate segment of male right antennule. Basis of the male fifth right leg possess a butterfly shape hyaline membrane on the inner lateral side; 2-segmented endopod with board distinct proximal segment. Endopodite of the female fifth leg is elongated round apex without any septum. The identified diaptomid tends to be restricted in the Himalayan region; it seems apparently isolated from the purported main area of the origin.

Author Biographies

Shaikhom Inaotombi, Environmental Biology Lab., ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Nainital, Uttarakhand, 263136 India.

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Debajit Sarma, Environmental Biology Lab., ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Nainital, Uttarakhand, 263136 India.

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Published

26-12-2024

Issue

Vol. 16 No. 12 (2024)

Section

Communications

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