Odonata of the south-west and north-east of Cambodia as studied in early rainy season of 2013: 1-94. Corrigenda to Cambodian Odonata reports published by O.E. Kosterin between 2010 and 2012: 95-96

Results of an odonatological survey of the coastal SW regions and continental NE regions of Cambodia in May 22 – June 8, 2013 are presented. All Odonata recorded are listed by localities. Of 107 Odonata species encountered, 104 were identified to species level, of which 15 are reported for the first time for Cambodia, namely Macromidia genialis shanensis Fraser, 1927 in Koh Kong Province, Chalibeothemis fluviatilis Lieftinck, 1933 in Kampong Saom Province and Ceriagrion azureum (Selys, 1891), Prodasineura coerulescens Fraser, 1932, Protosticta caroli van Tol, 2008; Gomphidia abbotti Williamson, 1907, Lamelligomphus castor (Lieftinck, 1941), Macrogomphus kerri Fraser, 1922, Nychogomphus duaricus (Fraser, 1924), Orientogomphus minor (Laidlaw, 1931), Macromia aculeata Fraser, 1927, Macromia chaiyaphumensis Hämäläinen, 1985, Macromia cincta (Rambur, 1842), Nesoxenia lineata (Selys, 1879) and Palpopleura sexmaculata (Fabricius, 1787) in Ratanakiri Province. Besides, Ceriagrion indochinense Asahina, 1967 is confirmed for Cambodia. Cambodian specimens of Hemicordulia sp. are re-identified as Hemicordulia tenera ssp. The country list now reaches 152 named species. Of them, most interesting are 5 species with generally Malay ranges: Archibasis viola, Aethriamanta gracilis, M. cincta, C. fluviatilis and Nesoxenia lineata. Characters and/or taxonomy are also discussed of Vestalis gracilis (Rambur, 1842), Euphaea masoni Selys, 1859, Rhinagrion viridatum Fraser, 1938, Aciagrion spp., Archibasis spp., P. caroli, Gynacantha subinterrupta Rambur, 1842, Idionyx thailandica Hämäläinen, 1985, Neurothemis fluctuans (Fabricius, 1793) and P. sexmaculata. Notes on habitats and habits of some species are provided. General notes on the areas and their Odonata as well as field impressions are briefly outlined and illustrated by photos.