Scolytus beetle damage in a dead elm, Ham Lands (2)
Introduction
The photograph on this page of Scolytus beetle damage in a dead elm, Ham Lands (2) by Stefan Czapski as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
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Image: © Stefan Czapski Taken: 4 Mar 2013
There are many elms along this stretch of the Thames towpath, many of them dead, while those still alive are in poor condition. The photo shows the 'galleries' excavated by the vector of Dutch Elm Disease - the beetle Scolytus scolytus. It is said that a central furrow is cut by the adult female, the side galleries being cut by the feeding larvae. The tree - what is left of it - stands in the narrow margin of land between the river and the towpath. For another view see http://www.geograph.org.uk/photo/3358895