De schermbloemzandbij Andrena nitidiuscula terug in Nederland (Hymenoptera: Apidae)

New records of Andrena nitidiuscula in the Netherlands (Hymenoptera: Apidae) In 2005 Andrena nitidiuscula was observed from late June till mid August in a garden and a few other sites near Maastricht (Limburg). These observations are the first since 1950 and refute the classification as extinct in the Netherlands in the red list of Dutch bees. The new establishment is probably a result of recent fine summers. In agreement with pollen analyses by Westrich, the species almost exclusively visited Apiaceae, especially Daucus and Levisticum. The few historic Dutch records of flower visits by females remarkably refer to Asteraceae. Given the new series of observations and the expected future climatic developments, Andrena nitidiuscula probably is and will remain an established member of the Dutch fauna.