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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?


  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.

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

  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!

  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