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Diptera.info :: Identification queries :: Diptera (adults)
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free fall ... Acrocera orbiculus
jorgemotalmeida
#21 Print Post
Posted on 24-07-2009 19:50
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another from Isidro.
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Edited by jorgemotalmeida on 24-07-2009 19:58
 
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jorgemotalmeida
#22 Print Post
Posted on 24-07-2009 19:52
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now, here we can see the same specimen as the first photos. And then I will show another Acrocera I spotted in the same place with some differences.
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jorgemotalmeida
#23 Print Post
Posted on 24-07-2009 19:53
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another from dorsal view... compare with the Isidro's photos (in page 1). The same species and a high variability in the specimens.
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jorgemotalmeida
#24 Print Post
Posted on 24-07-2009 19:54
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now, a different specimen I caught in the same place. It has some differences in comparation with the first specimen I showed and with Isidro's photos.
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#25 Print Post
Posted on 24-07-2009 19:55
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and the last...
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#26 Print Post
Posted on 24-07-2009 20:00
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So, this shows that Acrocera sanguinea has a great variability. Not so much as the Cyrtus gibbus (the differences resides in the patterns of the abdomen.)

I would like to hear opinions about these 3 specimens. They look rather interesting. (ok... opinion a little biased Smile )

The first photo (specimen) shows a very reddish abdomen than yellowish/beije. The specimen of Isidro has a remarkable pattern on the scutum. The specimens of Serra da Estrela has the scutum all black. Also among the specimens of Serra da Estrela there are differences in size that can be comparable! 3 mm to 6 mm. And differences on abdomen can be seen as well. The last specimen has yellowish hues in the abdomen and there are no triangular spots visible. The first specimen I showed has a very weak triangular spot.
Edited by jorgemotalmeida on 25-07-2009 08:59
 
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#27 Print Post
Posted on 25-07-2009 13:37
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i was seeing the Bei Bienko's keys and I found another Acrocera... Acrocera globula that fits better in the specimens I caught... Now Acrocera globula is a synonym of Acrocera orbiculus http://www.faunae...p?id=59493
The Acrocera of Isidro is *really* an Acrocera sanguinea.
Unfortunately the description of A. orbiculus (globula) in Bei-Bienko by Emilia Narchuk is rather poor.

Could be the first specimen really an Acrocera orbiculus?
 
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jorgemotalmeida
#28 Print Post
Posted on 25-07-2009 13:40
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see here:
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Zeegers
#29 Print Post
Posted on 26-07-2009 17:09
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The wing venation is different. This is definitely not sanguinea but Acrocera orbiculus, first a male (scutellum yellow), then the female (dark). Also a very variable species.
We could already have seen it in the first pic, but I missed it.


Theo
 
jorgemotalmeida
#30 Print Post
Posted on 26-07-2009 17:41
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Grin great, Theo! I have ALSO found more two today!!!! Grin

And a new genus for Portugal as well... Grin Soon I will give more info Smile
 
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