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Brazilian flower fly

 
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Eric F



Joined: 11 Nov 2008
Posts: 246
Location: Sacramento, Calif.

PostPosted: Tue Apr 28, 2009 6:56 pm    Post subject: Brazilian flower fly Reply with quote

Here is a small Zerene Mac stack (12 layers - each 0.25mm; PMax) of a Quichiana sp. flower fly from Brazil. Canon 40D & MP-E 65 at 3.7x (5.6); illum. by B & L fiber optic w/ MT-24EX flash. Very limited retouching, slightly cropped vertically. Scale = 1mm.



Eric
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dmillard



Joined: 24 Oct 2006
Posts: 501
Location: Austin, Texas

PostPosted: Sun May 10, 2009 5:09 am    Post subject: Reply with quote

Hello Eric,

This looks like a very challenging subject! I'm curious about the setae on the eye - do they cover the entire surface? Would it be possible to post a single, unstacked shot?

Thanks,
David
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Harold Gough



Joined: 09 Mar 2008
Posts: 5787
Location: Reading, Berkshire, England

PostPosted: Sun May 10, 2009 10:54 am    Post subject: Reply with quote

A dipteran with holoptic eyes so, presumably, a male.

The general impression is that it is fresh out of the pupa.

Harold
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My images are a medium for sharing some of my experiences: they are not me.
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Eric F



Joined: 11 Nov 2008
Posts: 246
Location: Sacramento, Calif.

PostPosted: Sun May 10, 2009 11:49 am    Post subject: Brazilian flower fly Reply with quote

Hi David,

Here is a single, unedited shot:



The eye setae are unevenly distributed: the top 1/3 of the eye has dense, black setae, while the remainder has sparse, white setae. Many species of Syrphidae have uniquely different patterns of eye setae (or lack them entirely); this feature is often useful for distinguishing species.

After I posted the original (stacked) image, I thought it looked 'scruffy;' I figured I should have shot more layers -- for finer detail! My main goal was just to show that the little B&L fiber optic light guides would work OK with the Canon MP-E macro lens...

Harold,

Yes, this guy does look like he might be crawling out of his pupa. I think it is the way I pinned the specimen years ago! (Removing the pin was the extent of my retouching.)

Eric
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