|Authors||F. van der Meer, M. Reemer, T.M.J. Peeters|
|Title||De roodrandzandbij Andrena rosae in de Zuid-Hollandse Biesbosch (Hymenoptera: Apoidea: Andrenidae).|
|Journal||Nederlandse Faunistische Mededelingen|
|Keywords||zandbijen; Andrenidae; verspreiding; Nederland; biologie|
|Abstract||Andrena rosae in the Zuid-Hollandse Biesbosch (Hymenoptera: Apoidea: Andrenidae)|
Andrena rosae is a fairly large, black and red mining bee. It has declined dramatically in the 20th
century in northwestern Europe. In the Netherlands the species only survived in and around the
Biesbosch, at the confluence of the rivers Maas and Rijn. In 2005 a research was performed to
establish the distribution pattern within the northern part of the Biesbosch (province of Zuid-
Holland). Furthermore, attention was paid to nest locations and pollen gathering. The species
proved to be quite common throughout the study area. In spring, nests were found on the
southern slopes of the dikes. Surprisingly, no nests could be found during the summer months.
Near the nests unusually large specimens of Nomada fabriciana were found: these might possibly
be parasites of A. rosae. In spring, female A. rosae where seen only on Salix and Prunus spinosa.
Pollen analysis indicated that pollen had only been collected on Salix. In summer, females
were frequently found on Heracleum sphondylium, Angelica sylvestris, Eryngium campestre and
occasionally (and surprisingly) also on Filipendula ulmaria. Pollen analysis showed that the bees
indeed collected pollen on all of these plants.
German authors (e.g. Westrich 1989) state that A. rosae occurs only in summer and that the
spring specimens belong to another species, A. stragulata (synonym A. eximia). Presently, this
matter is being studied by analysing the dna of Dutch specimens. Details of this dna-analysis
will be published separately.
|Download paper|| http://www.repository.naturalis.nl/document/159668 |