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| Raemakers, I.. |
| Sphecodes majalis, a new bee species for the Netherlands (Hymenoptera: Apidae) A population of Sphecodes majalis was found on a limestone grassland near Maastricht (Limburg). On several occasions more than 10 female and several male specimen were observed. Sphecodes majalis is a parasite of Lasioglossum pallens, which was recorded for the first time in the Netherlands in 1997. Since then L. pallens has become well established in the southern part of the province of Limburg. At the locality where S. majalis was found, L. pallens occurs in large numbers. In April many dozens of males swarm along the woodland edges. The less conspicuous and solitary females mainly nest in dense Festuca rubra swards with a thick litter layer, rather than in the open... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Sphecodes majalis; Bijen; Apidae; Verspreiding; Nederland; 42.75. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/261962 |
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| Raemakers, I.. |
| 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... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Nederland; Verspreiding; Biologie; 42.75. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/262192 |
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