Wednesday 23 March 2016

Cors Fochno and garden moths

We trapped on Cors Fochno and our garden last night and were delighted to more than double our total moths for the garden this year with 14 moths, including 10 of the most common species for this time of year. On the bog we recorded 26 moths of 8 species: Yellow horned (13), Dotted border (3), Early grey (3), Chestnut (2), Double-striped pug, and micros Diurnea fagella, Agonopterix ocellana, and Caloptilia stigmatella.
Caloptilia stigmatella

Distribution map for Yellow horned
 Yellow horned is quite a common moth whose foodplant is both Silver and Downy birch, but there is a surprising absence of records for the south western side of the county.

Tony & Ina


  1. It's a pretty uncommon moth just over the border in Pembs as far as I can tell.

    1. Thanks for your comment, looking at the NBN gateway there are indeed few records for Pembs. Is there plenty of Birch in the county? One of our recorders in the south of the county, close to a NNR, has pointed out that Birch was frequently removed to prevent it becoming too dominant.

  2. I can't think of much birch off-hand - maybe in the boggy areas such as Dowrog Common and around St Davids. I must ask Robin where I can find a Yellow Horned in Pembs!


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