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Thursday, 10 July 2014

Mynydd Ystyflau-carn daytime moths

4 hours peat-probing on Mynydd Ystaflau-carn as part of the Carmarthenshire Bogs Project was punctuated by various nice moths.  Ali Baird joined me for part of the day, speeding things up by taking on half the probings (pushing in fibreglass canes to measure peat depth across a 20m grid).

The day started well, as a half-hearted bash of the Broom opposite the carpark produced a Trifurcula immundella: a very, very tiny moth with no records in the Carms database (though it is mapped for the VC in MBGBI 1, suggesting someone claimed it once).

Following that success, we walked out towards the bog, passing a Beautiful Yellow-underwing larva feeding on Cross-leaved Heath, a Four-dotted Footman, and clouds of Catoptria margaritella.

A Northern/Oak Eggar belted past, and I disturbed 2 Marsh Oblique-barred, 2 Aphelia viburnana, 1 Ancylis unguicella (4th Carms site), and a Biselachista albidella (2nd Carms record).

Once I'd finished probing I had a quick bash of roadside bushes, where 2 Pammene aurana were imago highlight, but mines of two Stigmella species on Rowan were rarer in a Carms context (Stigmella aucupariae has a gallery mine throughout its length, whereas the less common S. sorbi has a linear gallery leading quickly to a large blotch).

Finally, can anyone suggest why there should be ca. 30 moth wings (mostly Drinker but a few Eggar) around this dry hummock of moss?!

1 comment:

  1. You had a nice collection of moths from this site - well done! I suggest that the accumulation of wings is possibly due to a chat/pipit feeding station for a fledged young bird, or perhaps where wings are removed prior to feeding young at a nearby nest. Or perhaps a look-out spot from where birds would foray? I`m really not sure though.
    Mynydd Ystyfflau-carn, with its distinctive metal mast, is visible from a great distance away (eg W Mynydd Du this Wednesday). Ystyfflau (note my correct spelling!) = standing stones, which seem to have been removed from this typical ridgeway site.