Manger, R., 2007. Exterior characteristics of Sympecma paedisca in the Netherlands. Brachytron 11 (1): 63-74. In this article a description of the exterior aspects of a hibernating population of the Siberian winter damsel (Sympecma paedisca) in the Netherlands is provided. The average body length of the hibernating winter damsel was 37.0 mm. The population studied showed some variation in colour and markings at the thorax. Ten percent of the population showed reduced markings and another thirteen percent showed still bright background colour in the hibernation period from October to April. During the three to four months of hibernation no colour changes appeared. In the reproductive period the individuals became more dull and darker coloured.

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Nederlandse Vereniging voor Libellenstudie

René Manger. (2007). Uiterlijke kenmerken van de Noordse winterjuffer (Sympecma paedisca) in Nederland. Brachytron, 11(1), 63–74.