[tdwg-content] Audubon Core Review: media recording traces of organisms

Here is a forward of a question I received regarding the Audubon Core term list:

The immediate question: How would I record most of my sawfly photos: which are usually not sawflies [adults or larvae] themselves but their galls, mines, 'holes in leaves' (sometimes, by their shape, I can precisely identify species produced it), etc., etc. People will photograph nests, animal's traces, record bird songs, but how such media would be tracked? It seems to be a very common situation.

I did not notice anything for such "product" instead of animal itself. I should have seen a generic term somewhere but don't remember neither the English or Latin word nor where could I see it.

Alexey