This hoverfly was photographed during one of our very brief sunny spells
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The presence of X. stackelbergi and the possibility of X. dives means that pedissequum is not so easy, now. pedissequum is a species of grass, stackelbergi of woods, more, apparently. A picture of the thoracic pleura is needed, to check for a single yellow line, or spots as well. Really, specimens are needed for checking. This has all come to light in the last year or so.
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Agreed as implied it is likely but it cant be certain Wing veination also important part of the key - alas Ian they are moving !!!
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citrofasciatum not considered as an option in this id. Would love to see one though
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Still needs to be keyed out Jeremy - (as in excluded ) see above since the Genus Xanthogramma is specified fortunately the dichotic key excludes X.citrofasciatum at an early stage on tergite marking and moves to
pedissequum/stackelbergi which is less easy
I dont see these in the North of England (see NBN)
Best Wishes & Happy Hunting WLR
the six I've found so far this year have all been emphatically grassland, mostly hackney marshes, but also some more inner city on tiny grass areas near ponds in parks. In flight like Ectemnius. Settled, it's a mawkish-looking fly, clambering about with it's wings jutting out and usually quite obliging to shots from the side. So far just one has shown more than one extra small spot on the thoracic pleura.
I'd love to see citrofasciatum, by the way. Where on earth is it?
Anyway I get to check proper woodland edges tomorrow and it looks as though I'll be swapping the hoverfly book for my Dad's net!
Quite widespread on limestone grassland, but only found much at all in the south. A rare one. Stretches well up the country, though.
Good Luck - Would be great if you could lump all three like the Volucella Shots very useful for ID
That's not going to happen without a specimen, though, as you won't get stackelbergi accepted from a photo!
I am confident with the talent of Jeremy and yourself that you can convince the boffins to tick the box :-)
Have you found any stackelbergi ?? They are a no go here in Yorkshire altough its suprising what jumps out of a hedge when least expected
No...like you I am in Yorkshire and Xanthogramma are just incredibly rare. I keep trying for citrofasciatum in likely looking areas of the Wolds (where they should exist, I think), but no joy, so far.
Lat/Lng: 51.9109007, 0.9208342
OS grid ref: TM009276