all these three variations together on the same tree today
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The second picture is tenax, and the third may be. tenax has the hind legs wholly dark and the hind tibiae are swollen and hairy-fringed. The first fly is not tenax, as the legs are too pale. I would submit that separately. The abdominal pattern looks as if it is Myathropa florea, but it is a difficult angle!
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actually the third picture was id-ed as tenax yesterday after I put it as e.eligans. I thought I'd add it to the pale and dark I got today, all three were there today but I ignored the medium one having already photoed it. The 'pale' one consistently looked like small m.florea but without the right markings whenever I peered closer, so I decided to get a picture on that basis, more active though, wouldn't settle like m.florea eventually does, and seeming significantly smaller
- I'll concentrate on that one as well tomorrow then
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"M. florea is very variable in size and strength of markings, giving the deceptive appearance that several species may be involved." (Stubbs & Falk, 2002)
- in reference to the small specimen here, with vague markings, a colossal one from a day ago, and my confusion today over whether this was something new and to be photographed or not
Lat/Lng: 51.5553, -0.0336
OS grid ref: TQ364858