Posted by cebe on 21-02-2011 13:24
#3
thanks,
had those adults before... An interesting English abstract in http://www.naturvardsverket.se/Documents/publikationer/620-5759-6.pdf suggests a link with the Dutch Elm-Didease who creates this kind of habitats we also have here...
Bart
Edited by cebe on 21-02-2011 13:26