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Please help with wasp ID (1 Viewer)

herring

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I'd appreciate any help that anyone might be able to offer in identifying the attached wasp (at least I think it's a wasp). I shot it today on some thistle heads in Middlesex - It didn't seem to be hunting or parasitising anything, so no clues there. Thanks in advance.
 

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Tony_InDevon said:
Hi Herring, Sorry I have no idea what it is but it's a beautiful shot. Can I ask what kit you used? Tony

Thanks for the compliment Tony.

This was shot with a Nikon CP4500 at almost minimum focus distace - about 3 or 4cm. No flash and no supplementary lens. The picture above is cropped to about half the size of the original and there is a very small amount of photoshopping to tidy up the flower head and slightly sharpen the shot. The wasp was about 1cm long.

I've had the CP4500 for about 2 weeks, after years of trying the same shots with 35mm gear - I'm in love. The handling is great, the setup is child's play for anyone used to photography and the picture quality is amazing (for web purposes).
 
Hello Herring,

Nice picture. NOT A WASP, but a Conopid FLY! Almost certainly Physocephala rufipes. There is only one other species of Physocephala in Britain but it is rather rare. Conopid flies make a living by being internal parasites of bees, females darting down on their hosts to lay eggs on them!

all the best

ian wynne
 
Many thanks Ian.

I've done a bit of reading up since I posted - I guess the obvious halteres and short antennae should have given me a clue it was Diptera. There were bees +++ at the site, so I this little beauty might have been looking for a host.

Do you know what advantage the fly has in looking like a wasp - or is it just tha form follows function? It does similar things as a parasitic wasp, so evolved looking like one?

Thanks again.
 
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