IDF-Report : newsletter of the International Dragonfly Fund
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45
Results of the odonatological survey of the coastal SW regions of Cambodia in August 12-28, 2011 are presented. Those include general notes on the Odonata fauna in late rainy season, enumeration of all records by locality, discussion of interesting specimens and their taxonomy, and notes on habitats and habits of some species. Of 87 named Odonata species encountered during the trip, 15 are reported for the first time for Cambodia, namely Aciagrion hisopa (Selys, 1876), Anax immaculifrons Rambur, 1842, Burmagomphus divaricatus Lieftinck, 1964, Gomphidictinus perakensis (Laidlaw, 1902), Merogomphus parvus (Kruger, 1899), Nepogomphus walli (Fraser, 1924), Idionyx thailandica Hamalainen, 1985, Macromia cupricincta Fraser, 1024, Macromia septima Martin, 1904, Macromidia rapida Martin, 1907, Agrionoptera insignis (Rambur, 1842), Lyriothemis elegantissima Selys, 1883, Onychothemis testacea Laidlaw, 1902, Orthetrum luzonicum (Brauer, 1868), Orthetrum testaceum (Burmeister, 1839). The country list now reaches 125 named species.
44
The results of an odonatological expedition to the Hose Mountains in central Sarawak, Malaysian Borneo made in April 2011 are presented. During the two-week expedition more than sixty-three species of Odonata were collected, bring the number of species of Odonata known from the Hose Mountains to over ninety-three; a number greater than that recorded from a some of Sarawak’s National Parks. Species of particular interest collected on the expedition include Drepanosticta new species, Protosticta tubau Dow, 2010 and, most notably, Chlorogomphus manau Dow & Ngiam, 2011, which was discovered during the expedition.
43
Six Odonata species were collected during night light trapping on the Mambilla Pla-teau, Taraba State Nigeria. Being predominantly diurnal insects, odonates captured in light traps have always been considered as an anomaly. The new data initiated an extensive interrogation of all records on Odonata collected near artificial light sources.A total of 415 records (402 published and 13 new) are presented here with a sum-mary of previous discussions and new discussion points. The general conclusion is that odonates are mainly confused by, rather than attracted to the light. New ave-nues for further research in this field are suggested based on previous important stu-dies undertaken on Odonata morphology and physiology.
41
Based on data collected from literature, museum collections, national databases and personal communications, an up-to-date map of the worldwide distribution of Somatochlora sahlbergi is presented. A new hypothesis is presented indicating that occurrences are at least regionally correlated with palsa mires. Two examples of larval habitats in Europe are illustrated and described, including the first observation of reproduction in Norway and the first record of co-occurrence with Zygoptera in Europe. The exuvia of S. sahlbergi is illustrated and distinguishing features briefly discussed.
40
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.
39
38
Odonata fauna of Diomabok Lake and its surroundings, Davao Oriental, Mindanao Island, Philippines
(2011)
During three visits in October and December 2010 and May 2011, a total of 56 Odonata species was recorded. All species reported here represent first Odonata records in the area. The most noteworthy discoveries were one novelty (Hydrobasileus vittatus) to the Philippine fauna and two first records (Tetracanthagyna brunnea and Aethriamanta gracilis) from Mindanao Island. Seven species represent either new species to science or potentially new species; one Drepanosticta and one Amphicnemis are new to science, and another Drepanosticta, Amphicnemis, Pseudagrion, Gomphidia and Urothemis are potentially new to science.
37
The paper compiles records from four excursions to study the Odonata fauna of southern Guizhou, China. Between 2007 and 2010 in Xiaoqikong Park and Maolan National Nature Reserve, 104 taxa have been recorded. Some interesting species are discussed, compared with sibling taxa, and information on habitats and habits is given.
36
First records for Vietnam of Fukienogomphus promineusChao, 1954 and Gomphidia abbotti Williamson, 1908 are documented with emphasis on morphological details. The previously published record of Sieboldius gigas(Martin, 1904) in Do et al. (2011) has to be corrected into Megalogomphus sommeri (Selys, 1854).