Sunday, 27 July 2014

Marsh Oblique-barred? and Digitivalva pulicariae?

From my garden moth trap on Friday night...

Marsh Oblique-barred?
Digitivalva pulicariae?

9 comments:

  1. I've never seen either of these moths, but your micro does look the ticket for pulicariae.

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  2. Thanks Peter. There's plenty of Fleabane and Hemp Agrimony around here for the D. pulicariae. Not sure why the Marsh Oblique-barred would be here though - have I made a mistake on ID?

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  3. I'll leave that to others. I've only ever chopped ones from Ian T's Rothamsted trap and they were battered to pieces.

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    1. Looks right to me Sarah. Did you see Simon's post? He had two the other night in the centre of Aber! I wonder if they disperse like this when conditions are right looking for new suitable habitats?

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  4. Thanks Ina. I'm glad I saw Simon's post as I was convinced it was a micro! The nearest marsh-type area here that I can think of is the rhos pasture in Plwmp (about 7 miles away).

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  5. Hi Sarah, I have been looking at Marsh oblique-barred records for other counties and they all agree that this is a wetlands moth, however on Dorset moths website http://www.dorsetmothgroup.info/ there is this extra information "The moth occasionally disperses short to medium distances away from its host habitat, usually on the warmest of nights". Although we don't have any records from the Teifi marshes, that does seem to be a likely site. The distance from there to Aberporth must be about 10 miles (about the same as the distance from Borth bog to Simon's) and we have had some warm nights recently.
    Tony

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    1. Thanks
      Interesting info. about it dispersing on warm nights and Teifi marshes really isn't far away.

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  6. I get Marsh Oblique-barred a couple of times a year here in Brechfa (central Carms), usually accompanied by other wandering boggy/marshy moths. Weather conditions recently have been perfect for dispersing moths, and I got all manner of wanderers here over the weekend. So I'd be confident that Sarah's Marsh Oblique-barred is a wanderer, though perhaps most likely from some small patchy of Molinia mire nearer than Teifi Marshes.

    On the subject of Marsh Oblique-barred, it's pretty much constant in the Molinia-dominated lowland bogs that I have NVC surveyed over the last 10 years for NRW/CCW, including a good number in Ceredigion. I jotted some records down on field maps housed in NRW Aber, but mobilising them (and various other moth and misc invert records) would be rather tricky. One to contemplate.

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    1. Thanks for your very helpful comments. It will be well worth trying to extract the moth data from the survey reports held by NRW, when things have quietened down a bit.
      Tony

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