Peter Pearson's picture

Hoverfly

Observed: 15th July 2012 By: Peter PearsonPeter Pearson’s reputation in InvertebratesPeter Pearson’s reputation in InvertebratesPeter Pearson’s reputation in InvertebratesPeter Pearson’s reputation in Invertebrates
Hoverfly
Description:

This hoverfly was photographed during one of our very brief sunny spells

Identifications
Species interactions

No interactions present.

Comments

ophrys's picture

Xanthogramma

WLR

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.

Ian
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My Flickr photos...

http://www.flickr.com/photos/52163027@N02/

Wildlife Ranger's picture

Hovering

Agreed as implied it is likely but it cant be certain Wing veination also important part of the key - alas Ian they are moving !!!

http://poutaa.net/kukkakarpaset/key_Xanthogramma.pdf

also

http://caliprobola.webs.com/xanthogramma.htm

HTH

WLR

jeremyr's picture

stackelbergi

citrofasciatum not considered as an option in this id. Would love to see one though

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latest pics and diptera videos

Wildlife Ranger's picture

Keying

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

jeremyr's picture

grassland

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!

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ophrys's picture

citrofasciatum

Quite widespread on limestone grassland, but only found much at all in the south. A rare one. Stretches well up the country, though.

Ian
_________________

My Flickr photos...

http://www.flickr.com/photos/52163027@N02/

Wildlife Ranger's picture

Xanthogramma

Good Luck - Would be great if you could lump all three like the Volucella Shots very useful for ID

WLR

ophrys's picture

Photos

That's not going to happen without a specimen, though, as you won't get stackelbergi accepted from a photo!

Ian
_________________

My Flickr photos...

http://www.flickr.com/photos/52163027@N02/

Wildlife Ranger's picture

Hovers

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

Best Wishes

WLR

ophrys's picture

Yorkshire

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.

Ian
_________________

My Flickr photos...

http://www.flickr.com/photos/52163027@N02/