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Gasteruption jaculator On Goldenrod (Male Images Added)

 
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Harold Gough



Joined: 09 Mar 2008
Posts: 5788
Location: Reading, Berkshire, England

PostPosted: Sun Jul 24, 2011 9:16 am    Post subject: Gasteruption jaculator On Goldenrod (Male Images Added) Reply with quote

This wasp was photographed at about life size on the sensor and images cropped, the first by 75%, the others by 50%.

The wasp was slow flying and stayed on each inflorecence for long enough to frame and focus. It seemed oblivious to my presence. It is a parasite of Hylaeus bees in plant stems. The white tip to the ovipositor is diagnostic.

Here it comes. The pixelated highlight was present beofre sharpening:




The family Gasterupteridae is recognisable:




The species is recognisable, even if the head is hidden:



Here it is in full view, not as sharp as I thought:



All with E-P2, Tamron 90mm f2.5 SP macro, Marumi +3 (superfluous but on for higher magnifications). f8 1/250/ 1/160 (f11?), 1/320, 1/250 at 400 ISO, hand held.

Harold
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Last edited by Harold Gough on Sun Feb 09, 2014 11:52 am; edited 3 times in total
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DQE



Joined: 08 Jul 2008
Posts: 1626
Location: near Portland, Maine, USA

PostPosted: Sun Jul 24, 2011 1:47 pm    Post subject: Reply with quote

Remarkable ovipositor!

The photos themselves are enjoyable in many ways, of course, but I have to admit my attention was captured by its anatomy!
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Harold Gough



Joined: 09 Mar 2008
Posts: 5788
Location: Reading, Berkshire, England

PostPosted: Sun Jul 24, 2011 2:25 pm    Post subject: Reply with quote

Even more remarkable when in flight, curved downwards and forwards.

I should have said that this was all one individual, seen for the first time today.

Harold
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Harold Gough



Joined: 09 Mar 2008
Posts: 5788
Location: Reading, Berkshire, England

PostPosted: Tue Jul 26, 2011 12:28 am    Post subject: Reply with quote

Harold Gough wrote:
Even more remarkable when in flight, curved downwards and forwards.

I should have said that this was all one individual, seen for the first time today.

I didn't find that to be the case when I saw a (smaller?) female yesterday. Some fine detail is shown:




I then found a very small individual, with no white spot, and I had to go back to x3 magnification. The lack of ovipositor makes it a male:





The images of the male are not as sharp as I would like. If he returns today I may get better ones but this very slender insect, without the white spot to follow, is very difficult to see in flight and to locate when landed. These shots are into the sun and I need some with the sun behind me.

All the above images are cropped by about 50%.

Harold
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