Friday, 30 December 2016

Shirenewton and Chepstow

More examples of leaf mines were found at both Shirenewton and Chepstow on the 24th and 27th of November respectively.
These leaf mines were found on Elm leaves at both locations and involve the work of micro moth Stigmella ulmivora or Barred Elm Pigmy.

Quite a few leaves were collected and photographed.
As you can see one leaf contained two larvae to help identify the species.
However in this case things were more difficult to determine and not straight forward.
I had to check and in some cases re-photograph all the other leaves and find out as to where the larval emergence holes were- a difficult process!
Thankfully they all were the same being the upper side of the leaf.
As for records apparently there are very few at just 5 or 6 only prior to these finds.

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