Abstract
Available information on Gynacantha Rambur, 1842 species from the South Pacific is reviewed. Specimens were found to be sufficiently similar to G. rosenbergi Kaup in Brauer, 1867 to be placed in the same species group (G. rosenbergi group—established here) but also distinct enough to form a subgroup of its own (G. rosenbergi Pacific group). All species of the G. rosenbergi group are diagnosed, with three species, Gynacantha vitiana sp. n. (male and female) from Viti Levu, Fiji, G. koroana sp. n. (male) from Koro, Fiji and G. vanuatua sp. n. (male) from Malekula, Vanuatu being described as new to science. A key is presented for identification of the males.
References
Brauer, F. (1864) Erster Bericht über die auf der Weltfahrt der kais. Fregatte Novara gesammelten Neuropteren. Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien, 14, 159–164.
Brauer, F. (1867) Bericht über die von Hrn. Dir. Kaup eingesendeten Odonaten (Schluss.) Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien, 7, 287–302.
Bryan, E. (1924) Notes on insect fauna of Fiji. Compiled by Neal L. Evenhuis based on handwritten notes collected by the author from visits to Fiji Department of Agriculture Entomology Collection, June 1924 and C.S.R. Co. Lautoka Entomology, 11 October 1924, 1–86.
Chao, H.F. (1953) The external morphology of the dragonfly Onychogomphus ardens Needham. Smithsonian miscellaneous Collections, 122 (6), 1–56.
Davies, D.A.L. (2002) The odonate fauna of New Caledonia, including the descriptions of a new species and a new subspecies. Odonatologica, 31, 229–251.
Dommanget, J.-L. (2000) Liste provisoire des Odonates de la Nouvelle-Calédonie. Martinia, 16, 142–144.
Donnelly, T. (1986) Preliminary report on Odonata collected in Samoa, 1985. Notulae Odonatologicae, 2 (7), 109–112.
Fraser, F.C. (1927) Part VII. Other orders of insects. In: Insects of Samoa. Odonata. 7 (1). British Museum of Natural History, London, pp. 19–44.
Fraser, F.C. (1951) A new species of Gynacantha (Odon., Aeshnidae) from Australia. Entomologist’s Monthly Magazine, 87, 307–308.
Grand, D., Marinov, M., Cook, C., Jourdan, H., Rouys, S. & Theuerkauf, J. (2014) Identification key to adult Odonata of New Caledonia and Wallis and Futuna. Odonatologica, 4 (3/4), 247–277.
Grand, D., Marinov, M., Jourdan, H., Cook, C., Rouys, S., Mille, C. & Theuerkauf, J. (2019) Distribution, habitats, phenology and conservation of New Caledonian Odonata. Zootaxa, 4640 (1), 1–112.
https://doi.org/10.11646/zootaxa.4640.1.1
Kimmins, D.E. (1936) The Odonata of the Oxford University Sarawak Expedition. Journal of the Federated Malay States Museums, 18 (1), 65–108.
Kimmins, D.E. (1953) Miss L.E. Chessman’s expedition to New Caledonia, 1949 – Orders Odonata, Ephemeroptera, Neuroptera and Trichoptera. The Annals and magazine of natural history, Series 12, 6, 241–257.
https://doi.org/10.1080/00222935308654420
Lieftinck, M.A. (1949) Synopsis of the Odonate fauna of the Bismarck Archipelago and the Solomon Islands. Treubia, 20 (2), 319–374.
Lieftinck, M.A. (1975) The dragonflies (Odonata) of New Caledonia and the Loyalty islands. Part 1. Imagines. Cahiers Office de la recherche scientifique et technique outre-mer (ORSTOM), Série Hydrobiologie, 9 (3), 127–176.
Marinov, M. & Theischinger, G. (2012) Description of two new aeshnids from Solomon Islands (Anisoptera: Aeshnidae). International Dragonfly Fund Report, 53, 1–8.
Marinov, M. (2016) A contribution to the dragonfly fauna of Guadalcanal, Solomons Islands (Insecta: Odonata) with description of two new species. Faunistic Studies in South-east Asian and Pacific Island Odonata, Journal of the International Dragonfly Fund, 17, 1–33.
Marinov, M., Jacq, F., Ramage, T. & Doscher, C. (2019) Contribution to the Odonata fauna of the Society Islands, French Polynesia (Insecta: Odonata). Faunistic Studies in Southeast Asian and Pacific Island Odonata Journal of the International Dragonfly Fund, 28, 1–38.
Michalski, J. (2012) A manual for the identification of the dragonflies and damselflies of New Guinea, Maluku, & the Solomon Islands. Kanduanum Books, Morristown, New Jersey, 561 pp.
Orr, A.G. & Kalkman, V.J. (2015) Field guide to the dragonflies of New Guinea. Brachytron 17 (Supplement), 3–156.
Theischinger, G. & Endersby, I. (2009) Identification guide to the Australian Odonata. Department of Environment, Climate Change and water, New South Wales, 283 pp.
Theischinger, G. & Hawking, J. (2006) The complete field guide to dragonflies of Australia. CSIRO Publishing, Collingwood, 366 pp.
https://doi.org/10.1071/9780643094109
Tsuda, S. (2000) A distributional list of world Odonata. Published by author, Osaka, 430 pp.
Van Gossum, H., Beatty, C. & Sherratt, T. (2006) The Zygoptera of Viti Levu and Vanua Levu, the two larger islands; in the Fiji archipelago. International Dragonfly Fund—Report, Newsletter of the International Dragonfly Fund, 9, 1–14.
Watson, J.A.L. & O’Farrell, F.A. (1991) Odonata (dragonflies and damselflies). In: Naumann, I.D., Carne, P.B., Lawrence, J.F., Nielsen, E.S., Spradbery, J.P., Taylor, R.W., Whitten, M.J. & Littlejohn, M.J. (Eds.), The insects of Australia. 2nd Edition. Melbourne University Press, Melbourne, pp. 294–310.
Watson, T., Theischinger, G. & Abbey, H.M. (1991) The Australian dragonflies. A guide to the identification, distributions and habitats of Australian Odonata. CSIRO, Canberra & Melbourne, 278 pp.
https://doi.org/10.1071/9780643100701