This Hover exhibits the pointy abdomen and the yellow front and rear tibia and orange tarsi typicla of pertinax -
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Agreed, but the only thing which really is visible in this picture to confirm the ID is the shape of the abdomen, as the front and mid tarsi are not visible.
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The rear legs of E tenax are generally dark just the one shot of this spec but i think the front tarsi top right is just visible enough to see it is banded
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The confusion species from this angle would not be tenax, as I agree that the rear tibiae on tenax are dark. At this angle, it is the smaller species that are the confusion. It's easy to get to pertinax on this one, as the abdomen is so long, but it is not always so clear. I don't agree about the front right tarsi, as it is not sufficiently visible on this one to help with the ID at all.
It's pertinax, though!
Lat/Lng: 53.7, -1.9
OS grid ref: SE1224