Linear Patterns

This tree was blown down in a wind event in the late-Spring of 2014.  In this fall view (27 September 2014) it appears that the tree is dead and that insect larva have made lots of headway in partially devouring the cambium (?) layer.

 

Downed tree with lines of insect frass

Downed tree with lines of insect frass

 

The most striking aspect of this to me is that the larval activity (i.e., wood borer grubs?) seems to have followed a linear pattern along the trunk of the tree.

 

Larva frass – closer view

Larva frass – closer view

 

In a closer view, it seems that most of the frass (i.e., the sawdust generated by the boring larva) is tan in color while one or two excavations seem to have bored into wood having a reddish color.  While pulling some of the bark away would probably add immediate insight as to what is happening here, I’ll just be patient and wait for the local pileated woodpeckers to discover this dining opportunity.  Then we’ll see what is going on.

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