Silver birch covered in a film.

[Brushcutter]

Hi

 

Seen a few Silver Birches with almost a shrink rap on them. You couldn't tell unless you get up close but there is a film all over the bark. What causes it?

 

Thanks

 

Andy

[sihart100]

dito ive seen the same today on a group of about 10, but haven't a clue what it is. at 1st i thought it was cob webs

[armchairarborist]

stag do? cant beat shrinkwrap..

[kevwrenn]

i saw this today but couldnt decide whether it was cobwebs or snail trail.

[Tony Croft aka hamadryad]

It is the silk of a moth! cant remember the name of it but the description is spot on, saw it in sweden a few years back.

 

will dig about and find the species concerned.

[Tony Croft aka hamadryad]

 

[geoff]

That is fascinating,never seen it before.

[morten]

I have seen the exact same thing on a Bird Cherry (Prunus Padus), in Denmark (August 2009).

At the base of the tree, there were something that resembles a termite's nest (see picture).

 

Do anyone know what species of insect makes it?

Edited April 17, 2010 by morten

[treequip]

Ermine moth makes a web like that but I would have expected the tree to be defoliated and some evidence of caterpillars

[Brushcutter]

It is the silk of a moth! cant remember the name of it but the description is spot on, saw it in sweden a few years back.

 

will dig about and find the species concerned.

 

I thought it would be some kind of moth.