Face not visible possibly E horticola
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Definitely not tenax, as the hind tibiae have a yellow base. The bright body and wing shade suggest horticola, but could also be pertinax.
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Thanks Ian I did deliberate for some time - knowing you would pick this up :-) The other shots of this unfortunately are out of DOF for the front legs and no face hence Eristalis sp . I also considerred horticola and am glad you arrived in a similar place independentaly unfortunately I think the safest ob is sadly yet again Eristalis sp in that box that they call Grey Hovers
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I seem to be fighting a losing battle here :-), but the links on iSpot work best if you just put in a genus name on its own, exactly as it appears in the drop-down list you get when adding names. So in this case it would be "Eristalis" rather than "Eristalis sp".
I'll add it to our wishlist to see if we can come up with an automatic way of dealing with this in future (so I don't have to keep nagging people!).
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I'm with you, Martin, but gave up making the point some time ago, as no-one seemed to be listening!
Lat/Lng: 53.7, -1.8
OS grid ref: SE1628