Odonata of the Cambodian coastal regions revisited: beginning of dry season in 2010

Results of the odonatological survey of the coastal SW regions of Cambodia on November 28 - December 11, 2001, are presented, including field notes, enumeration of all records by locality, discussion of interesting specimens and their taxonomy and of seasonality aspects. Fifteen (14 named) species have been added to the known fauna of Cambodia: Aristocypha fenestrella (Rambur, 1842), Rhinagrion viridatum Fraser, 1938, Lestes elatus Hagen in Selys, 1862, L. platystylus Rambur, 1842, Aciagrion tillyardi Laidlaw, 1919, Agriocnemis f. femina (Brauer, 1868), Archibasis viola Lieftinck, Ceriagrion calamineum Laidlaw, 1951, Mortonagrion aborense (Laidlaw, 1914), M. falcatum Lieftinck, 1934, Pseudagrion microcephalum (Rambur, 1842), 1948, Paragomphus capricornis (Förster, 1914), Hemicordulia undescr. spec., Macrodiplax cora (Brauer, 1867), Nannophya pygmaea Rambur, 1842, plus a provisionally identified Ceriagrion indochinense Asahina, 1976. The country list now achieves 106 named species (not counting Prodasineura verticalis sensu Asahina, 1983, C. indochinense and Hemicordulia sp.). Coeliccia megumii Asahina, 1984 is synonymised with C. kazukoae Asahina, 1984. The differences between Ceriagrion olivaceum Laidlaw, 1914 and C. calamineum Lieftinck, 1951 are discussed.