Individual study: Successful reintroduction of the scarce large blue butterfly Maculinea teleius and the dusky large blue butterfly M. nausithous at Moerputten Nature Reserve, Noord Brabant, the Netherlands
Wynhoff I. (1998) Lessons from the reintroduction of Maculinea teleius and M. nausithous in the Netherlands. Journal of Insect Conservation, 2, 47-57
The scarce large blue butterfly Maculinea teleius and the dusky large blue M. nausithous are protected under the European Habitats Directive. Their larvae live as parasitic ant-mimics in colonies of mainly Myrmica scabrinodis and exclusively M. rubra, respectively. Both species were lost from the Netherlands in the 1970s due to management change on their hay meadow habitat. This paper gives results six years after reintroducing them at the Moerputten Nature Reserve, Noord Brabant, the Netherlands.
Adult scarce and dusky large blues were caught with nets from meadows in the river Wisla valley, south Poland. They were placed in groups of three in small paper boxes and transported in a refrigerator.
The scarce large blue initially increased in numbers to an estimated annual population of between 700 and 1000 in 1992. In 1993, 1994 and 1995, estimated population size was about 300. In 1996 the annual population estimate was around 100.