Zeldzame libellen in Nederland in 2006-2009 CWNO Mededeling 5

Bosch, J.G. van 't, 2013. Rare dragonflies in The Netherlands in 2006-2009: CWNO-reports 5. Brachytron 15(2): 112-122. This is the fifth report of the Dutch Committee for records of rare odonates (CWNO). In this report, records from the period 2006-2009 are reviewed. Acceptability is judged independently by each of the committee members, based on the documentation available (e.g. descriptions, drawings, pictures or collected material). Only accepted records are reviewed. Of each accepted record the Province, nearby city and/or municipality, location, date, number, gender and names of the observers are given. If photographs are available, this is also mentioned. In most cases only the first record is given. Subsequent records of the same individual or population are accepted on the basis of the first record and are not reviewed. For these first observation the locations are marked with an asterisk *. These locations are regarded as a ‘known location’. New records from a known location will not be reviewed in the future. 2006 – A male and a female Leucorrhinia caudalis were observed near Maastricht (Limburg). This was the first record of this species since 1970. Unfortunately the species was not found there in subsequent years. Reproduction of Anax parthenope was proven for the first time, at one location in Gelderland and one location in Limburg. In 2006, a very large influx of Sympetrum meridionale took place with observations of at least 30 individuals accepted. There were only four previous records of this species. 2007 – The first population of Coenagrion scitulum was discovered at Cadzand-Bad (Zeeuws-Vlaanderen). The fifth ever observation of Anax ephippiger was near Zeist (Utrecht). The first known reproduction of Sympetrum meridionale took place at Westvoorne (Zuid-Holland). A maximum of 15 individuals was seen. Numbers of this species in other parts of the country were also high. At least three males of Somatochlora fiavomaculata were found near Wassenaar (Zuid-Holland). 2008 – A male Leucorrhinia caudalis was seen at Ottema Wiersma reserve (Friesland).Two new populations of Somatochlora arctica were discovered in Overijssel. A female Sympetrum depressiusculum was found at Hoge Veluwe (Gelderland), far from the few know reproduction locations. Exceptional wanderers of Somatochlora fiavomaculata were found at Eemshaven (Groningen) and on the Wadden Sea island Schiermonnikoog (Friesland) 2009 – A male Leucorrhinia caudalis was photographed in De Weerribben (Overijssel) by a group of Belgian observers. A male Ophiogomphus cecilia was photographed at Groote Peel (Limburg), away from the two rivers where populations are known. One of the highlights of 2009 was the observation of at least six males and one female Onychogomphus forcipatus along the river Grensmaas near Meers (Limburg). Coenagrion scitulum was found at four new locations in Zeeuws-Vlaanderen.