Sunday, 28 August 2016

Carn Cennen in daylight.

I have still to find an easier access to my favoured mountain trap site at the top of the Cennen ravine on Mynydd Du, but I keep trying! Today's sortie was a fairly level traverse from a rough track that goes over the mountain: I had about a mile of wet heather and bog to negotiate - it was tough going and I don't fancy carrying a generator and trap across it. Got caught in a bit of rain, but the view down the Cennen (in daylight, for a change!) was worth it.


Among the grass moths seen en route were some Catoptria margaritella.  Also seen were a few Common Carpets and several Silver Ys. I netted a couple of Eana osseana as well.

 Two pictures of one individual,

along with this one, which I think is the same species.

This limestone rock seems to have lichen along the bottom edge: is this Rhizocarpon geographicum and what has happened to the greater mass of it?

5 comments:

  1. Very little of that rock isn't covered with lichen, though most of the spp involved are grey. There's a bit more R geographicum at top right. Also, its likely to be acidic Millstone Gritnot Limestone.

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  2. Thanks, Sam. I've completely misread my book which clearly states "hard acid rocks!" Any idea what the grey stuff may be?

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  3. Steve Chambers or Ray Woods would be the chaps to i/d your lichens (or try to).
    Yes, a mile over rough, steep ground is too far to lug equipment.
    Eana osseana is a micro that I`ve completed overlooked, probably dismissing it as a worn grass-moth (to my shame). I`m aware of it now and will keep a look-out!

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  4. Grey lichens with black dot apothecia are microscope jobs - not possible from photos usually. These may well be Porpidia sp. as that genus is common on the acid upland rocks of wales

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