two separate males in a hedge fringing woodland
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These are not difficult with a good view of the hypovalves, such as that here (zoom in).
The following link is very useful...
Edit: Only just noticed there are two shown! The second is communis; the first looks better for cognata, but the angle is not great.
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there's that link. I did see it a couple of weeks ago but couldn't find it today, so thanks.
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ok, you'd get them all in the same stretch of hedge then
Lat/Lng: 51.6639, -0.1304
OS grid ref: TQ294977