Abstract
The male and female of Orthetrum erythronigrum sp. nov. are described from Great Nicobar Island and are believed to be endemic to the Nicobar Islands archipelago (holotype ♂, India, Andaman and Nicobar Islands, Great Nicobar Island, Great Nicobar Biosphere Reserve, N 6.99067, E 93.871363; 01-xii-2018; deposited in ZSI, SRC, Chennai, India). The male of this new species is easily distinguished from other known Orthetrum species by its black abdomen with contrasting crimson belly. Female is distinguished by its large size, the black non-metallic head, black thorax and the red abdomen with a distinct black pattern. Based on field observations and photographs, notes on the life colouration of the mature male and information on the distribution and habitat of this Great Nicobar endemic are provided.
References
Babu, R., Srinivasan, G. & Subramanian, K.A. (2018) Range Extension of Ictinogomphus decoratus (Selys, 1854) (Insecta: Odonata: Gomphidae) to India. Records of the Zoological Survey of India, 118 (4), 426–429.
Bedjanič, M., Kalkman, V.J. & Subramanian, K.A. (2020) A new species of Orthetrum Newman, 1833 (Odonata: Libellulidae) from the Andaman Islands, India. Zootaxa, 4779 (1), 91–100.
https://doi.org/10.11646/zootaxa.4779.1.6
CEPF (2020) Sundaland. Critical Ecosystem Partnership Fund. Available from: https://www.cepf.net/our-work/biodiversity-hotspots/sundaland. (accessed 28 August 2020).
Chhotani, G., Lahiri, A.R. & Mitra, T.R. (1983) Contribution to the odonate (Insecta) fauna of Andaman and Nicobar Islands with description of two new species. Records of the Zoological Survey of India, 80, 467–494.
Fraser, F.C. (1936) The Fauna of British India including Ceylon and Burma. Odonata. Vol. III. Taylor & Francis Ltd., London, 461 pp.
Garrison, R.W., von Ellenrieder, N. & Louton, J.A. (2006) The dragonfly genera (Odonata: Anisoptera) of the New World: An illustrated and annotated key. The Johns Hopkins University Press, Baltimore, Maryland, 368 pp.
Hämäläinen, M. (2002) Notes on the Libellago damselflies of the Andaman and Nicobar Islands, with description of a new species (Zygoptera: Chlorocyphidae). Odonatologica, 31 (4), 345–358.
Hämäläinen, M., Prasanth-Mohanraj & VeenaKumari, K. (1999) Additions to the odonate fauna of the Andaman and Nicobar Islands, Indian ocean. Notulae Odonatologicae, 5, 27–29.
Kalkman, V.J., Babu, R., Bedjanič, M., Conniff, K., Gyeltshen, T., Khan, M.K., Subramanian, K.A., Zia, A. & Orr, A.G. (2020) Checklist of the dragonflies and damselflies (Insecta: Odonata) of Bangladesh, Bhutan, India, Nepal, Pakistan and Sri Lanka. Zootaxa, 4849 (1), 1–084.
https://doi.org/10.11646/zootaxa.4849.1.1
Karube, H., Futahashi, R., Sasamoto, A. & Kawashima, I. (2012) Taxonomic revision of Japanese odonate species, based on nuclear and mitochondrial gene genealogies and morphological comparison with allied species. Part I. Tombo, 54, 75–106.
Kompier, T. & Futahashi, R. (2016) A new subspecies of Orthetrum melania from Vietnam (Odonata: Libellulidae). Tombo, 58, 27–33.
Lahiri, A.R. (1975) Report on the faunistic survey (Odonata) of the South Andaman Islands. Records of the Zoological Survey of India, 68, 365–366.
Lahiri, A.R. & Mitra, B. (1993) New records of dragonflies (Insecta: Odonata) from Bay Islands. Journal of the Andaman Science Association, 9 (1 & 2), 96–99.
Mitra, T.R. (1995) Additions to the odonate fauna of Great Nicobar Islands, Indian Ocean. Opuscula zoologica fluminensia, 129, 1–6.
Mitra, T.R. (2002) Note on zoogeography of Odonata (Insecta) of Nicobar Islands, Indian Ocean. Records of the Zoological Survey of India, 100 (3–4), 183–188.
Mitra, T.R., Babu, R. & Subramanian, K.A. (2013) Anax panybeus Hagen, 1867: an addition to the Odonata (Aeshnidae) of India. Journal of Threatened Taxa, 5 (2), 3682–3683.
https://doi.org/10.11609/JoTT.o3210.3682-83
Myers, N., Mittermeier, R.A., Mittermeier, C.G., da Fonseca, G.A.B. & Kent, J. (2000) Biodiversity hotspots for conservation priorities. Nature, 403, 853–858.
https://doi.org/10.1038/35002501
Nandy, S. & Babu, R. (2009) On a collection of dragonflies (Odonata: Anisoptera) from Andaman and Nicobar Islands. Records of the Zoological Survey of India, 109 (4), 35–51.
Nandy, S. & Babu, R. (2012) Insecta: Odonata. In: Director (Ed.), Fauna of Andaman and Nicobar Islands, State Fauna Series. No. 19 (1). Zoological Survey of India, Kolkata, pp. 33–68.
Paulson, D. & Schorr, M. (2020) World Odonata list. Last revision: 29 January 2020. Available from: http://www.pugetsound.edu/academics/academic-resources/slater-museum/biodiversity-resources/dragonflies/world-odonata-list2/ (accessed 1 July 2020)
Rajeshkumar, S. & Raghunathan, C. (2018) Description of a new species of Nososticta Hagen (Odonata: Platycnemididae: Disparoneurinae) from Central Nicobar Islands, India. Zootaxa, 4422 (3), 431–441.
https://doi.org/10.11646/zootaxa.4422.3.9
Rajeshkumar, S., Raghunathan, C. & Chandra, K. (2017a) Nososticta nicobarica sp. nov. (Odonata: Platycnemididae: Disparoneurinae) from Great Nicobar Island, India. Zootaxa, 4311 (3), 426–434.
https://doi.org/10.11646/zootaxa.4311.3.8
Rajeshkumar, S., Raghunathan, C. & Chandra, K. (2017b) Additional records of Odonata from Andaman & Nicobar Islands, India. Biosystematica, [2016] 10 (1 & 2), 39–46.
Ram, R., Chandra, K. & Yadav, K. (2000) Studies on the odonate fauna of Andaman and Nicobar Islands. Records of the Zoological Survey of India, 98 (3), 25–60.
Riek, E.F. & Kukalová-Peck, J. (1984) A new interpretation of dragonfly wing venation based upon Early Upper Carboniferous fossils from Argentina (Insecta, Odonatoidea) and basic character states in pterygote wings. Canadian Journal of Zoology, 62, 1150–1166.
https://doi.org/10.1139/z84-166
Sasamoto, A. & Futahashi, R. (2013) Taxonomic revision of the status of Orthetrum triangulare and melania group (Anisoptera: Libellulidae) based on molecular phylogenetic analyses and morphological comparisons, with a description of three new subspecies of melania. Tombo, 55, 57–82.
Sivaperuman, C. (2015) Odonata of Andaman and Nicobar Islands, India. In: Rawat, M., Dookia, S. & Sivaperuman, C. (Eds.), Aquatic Ecosystem: Biodiversity, Ecology and Conservation. Springer India, New Delhi, pp. 153–162.
https://doi.org/10.1007/978-81-322-2178-4_10
Sivaperuman, C., Suresh Kumar, S. & Venkataraman, K. (2011) New Records of odonates from Andaman and Nicobar Islands. Biological Forum, an International Journal, 3 (2), 69–70.
Tsuda, S. (2000) A distributional list of World Odonata. Osaka Prefecture, Japan, pp. 1–430.
Yong, H.S., Lim, P.-E., Tan, J., Ng, Y.F., Eamsobhana, P. & Suana, I.W. (2014) Molecular phylogeny of Orthetrum dragonflies reveals cryptic species of Orthetrum pruinosum. Scientific Reports, 4, 5553.
https://doi.org/10.1038/srep05553
Zhang, H.M. (2019) Dragonflies and Damselflies of China. Chongqing University Press, Chongqing, 1449 pp.