Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2019-11-28
Page range: 276–290
Abstract views: 51
PDF downloaded: 1

Description of a female and variation of Microgomphus alani Kosterin, 2016 (Odonata: Gomphidae) in Cambodia, with a note on sexual dimorphism in Microgomphus spp.

Institute of Cytology & Genetics SB RAS, Acad. Lavrentyev ave. 10, Novosibirsk, 630090, Russia. Novosibirsk State University, Pirogova str. 2, Novosibirsk, 630090, Russia
Odonata Gomphidae Microgomphus Selys 1858 Microgomphus alani Microgomphus jurzitzai Karube 2000 Heliogomphus selysi Fraser 1925 female description geographical variation Bergmann Rule sexual dimorphism metafemur Cambodia Thailand Indochina Phnom Kulen Mts Annamese Mts


Microgomphus alani Kosterin, 2016 was described from two teneral males from the Cardamom Mts. in SW Cambodia; it turned out that the description was based on the holotype with the anal appendages not fully expanded. Further specimens of M. alani (all mature) are reported: a male and two females from the Phnom Kulen Mts, NW Cambodia and five males and one female from Mondulkiri Province, E Cambodia. The appendage shape in mature males is illustrated and discussed and the female is described for the first time. The specimens from E Cambodia are ca 15-20% larger than those from SW and NW Cambodia and exhibit some differences in the shapes of the male epiproct and anterior hamulus and face maculation, however evaluated as insufficient to erect a new taxon. A hitherto neglected manifestation of sexual dimorphism in probably most Microgomphus spp. and at least some Heliogomphus spp. is pointed out. It concerns the mid- and metafemur, in males armed with numerous, dense and small spinulets but with two rows of long, sparse spines in females. An earlier report of Microgomphus jurzitzai Karube, 2000 for Cambodia was based on a misidentified M. alani specimen and is cancelled. A female specimen earlier identified and described from Thailand as Heliogomphus selysi Fraser, 1925 most probably was M. alani as well.



  1. Asahina, S. (1970) Burmese Odonata collected by Dr. Arthur Svihla. Japanese Journal of Zoology, 16, 99126.

    Asahina, S. (1986) A list of the Odonata from Thailand. Part XIV. Gomphidae—2. Tombo, 29 (12), 753.

    Boonsoong, B. & Chainthong, D. (2014) Description of the last stadium larva and female of Microgomphus thailandica Asahina, 1981 (Odonata: Gomphidae). Zootaxa, 3811 (2), 271279.

    Conniff, K.L. & Singh Limbu, M. (2018) Description of Microgomphus phewataali sp. nov. from Nepal (Odonata: Gomphidae). Odonatologica, 47 (3/4), 277288.

    Dow, R.A., Butler, S.G., Reels, T., Steinhoff, O.M., Stokvis, F.R. & Unggang, J. (2019) Previously unpublished Odonata records from Sarawak, Borneo, part IV: Bintulu Division including the Planted Forest Project and Similajau National Park. Faunistic Studies in South-east Asia and Pacific Islands Odonata, 27, 166.

    Fraser, F.C. (1934) The Fauna of British India, including Ceylon and Burma. Odonata. Vol. II. Taylor and Francis, London, 461 pp.

    Garrison, R., von Ellenrieder, N. & Louton, J. (2006) Damselfly Genera of the New World: An Illustrated and Annotated Key to the Anisoptera. The Johns Hopkins University Press, Baltimore, Maryland, 368 pp.

    Karube, H. (2000) Microgomphus jurzitzai spec. nov., a new dragonfly from southern Vietnam (Anisoptera: Gomphidae). Odonatologica, 29 (1), 6365.

    Katatani, N., Kitagawa, K., Muraki, A., Katoh, T. & Masaki, N. (2010) Notes on Thai Odonata, Part 5. The Odonata from Nan and Phrae. Aeschna, 46, 4858. [in Japanese with English abstract]

    Kompier, T. & Karube, H. (2019) A new species of Heliogomphus from Vietnam (Odonata: Gomphidae). Zootaxa, 4555 (1), 113120.

    Kosterin, O.E. (2015) Taxonomic and faunal notes on Macromia Rambur, 1842 from Cambodia. Odonatologica, 44, 117151.

    Kosterin, O.E. (2016a) Microgomphus alani (Odonata, Gomphidae) sp. nov. from Cambodia. Zootaxa, 4114 (3), 341350.

    Kosterin, O.E. (2016b) A survey of Odonata of Mondulkiri, the elevated eastern province of Cambodia, for ten days in June 2014. International Dragonfly Fund Report, 98, 186.

    Kosterin, O.E., Chartier, G., Holden, J. & Mey, F.S. (2012) New records of Odonata from Cambodia, based mostly on photographs. Cambodian Journal of Natural History, 2012, 150163.

    Lieftinck, M.A. (1929) Contributions to the dragonfly fauna of the Sondaic area. Tijdschrift voor Entomologie, 72 (2), 109147.

    Lieftinck, M.A. (1940) On some Odonata collected in Ceylon, with descriptions of new species and larvae. Ceylon Journal of Sciences, Biology, 22 (1), 79117.

    Makbun, N. & Fleck, G. (2018) Description of Microgomphus farrelli sp. nov. (Odonata: Anisoptera: Gomphidae) based on adults of both sexes and larvae from Northern Thailand. Zootaxa, 4422 (3), 442450.

    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, 11501166.

    Schorr, M. & Paulson, D. (2019) World Odonata List. Available from: (accessed 25 May 2019)

    Yokoi, N. & Souphanthong, V. (2014) A List of Lao Dragonflies. Kyoei Printing Co Ltd., Koriyama, 110 pp.