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green-metallic fly with striped eyes -> Calliopum simillimum
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Carnifex |
Posted on 30-05-2018 10:54
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
Hi, I wonder to which family this specimen belongs. Found in Vienna, End of May Size: about 4mm Kind regards, Lorin Carnifex attached the following image: [191.41Kb] Edited by Carnifex on 03-06-2018 22:24 |
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johnes81 |
Posted on 30-05-2018 11:23
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
Calliopum. I can investigate a species later, unless someone else can post. I have alot to do today. John and Nini. Naturalists not experts. |
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johnes81 |
Posted on 30-05-2018 18:35
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
very difficult to tell from this photo. I guess C. aeneum is closest. do you think that you can make microscopic photos of the ovipositor? lateral is good enough, i think. Even the ac count of the thorax is helpful if you can examine it. John and Nini. Naturalists not experts. |
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Carnifex |
Posted on 30-05-2018 23:07
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
Hi, I uploaded an additional pic. Does it help? Carnifex attached the following image: [269.22Kb] Edited by Carnifex on 30-05-2018 23:09 |
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johnes81 |
Posted on 31-05-2018 09:52
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
Hello, the new photo is not so helpful. I know Calliopum are very small and dark, which makes it difficult to count the rows of ac. I think that i see six rows of ac hairs. In this case, you are facing C. simillimum or C. aeneum. I do not see a match with C. simillimum but it is difficult to be accurate with these photos. I have attached a lateral view of the ovipositor of C. simillimum. I do not think that this species is C. simillimum. A quick test can help: are the rays of the arista shorter than the width of the base? if they are short, then you have C. aeneum as long as you can also count six rows of ac hairs. I will say Calliopum cf aeneum. If you can prove it, then you can remove the cf if you have a microscope, then this is very simple process. you do not need to dissect the ovipositor. Simply view the ovipositor in perfect lateral position and check the rays of the arista. johnes81 attached the following image: [54.29Kb] John and Nini. Naturalists not experts. |
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johnes81 |
Posted on 31-05-2018 09:54
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
also attached a view of the long rays of C. simillimum notice that the rays are much longer than the width of the base of the arista. johnes81 attached the following image: [48.85Kb] John and Nini. Naturalists not experts. |
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Carnifex |
Posted on 01-06-2018 15:58
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
I hope the resolution does allow a species ID now.
Carnifex attached the following image: [291.77Kb] |
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Carnifex |
Posted on 01-06-2018 15:58
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
ovipositor
Carnifex attached the following image: [220.74Kb] |
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Carnifex |
Posted on 01-06-2018 15:59
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
antenna
Carnifex attached the following image: [106.37Kb] |
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johnes81 |
Posted on 01-06-2018 16:15
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
Calliopum simillimum. I am sorry that i was unable to see this structure until now. You did very well to make photos of this. Job well done, Lorin John and Nini. Naturalists not experts. |
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Carnifex |
Posted on 03-06-2018 22:16
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Member Location: Vienna, Austria Posts: 1840 Joined: 23.06.15 |
And I thank you for your ID and instructions. The fly was also lucky, as it could be released after the final successful photo session |
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johnes81 |
Posted on 04-06-2018 16:00
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
Calliopum are very lovely and very nice to work with. I am happy that it survived the id process. I am sorry that i couldn't help faster. The first photo has glare from light and the angle is not perfect lateral. I have made errors in judgement with such situations, thus it is better to be persistent.
John and Nini. Naturalists not experts. |
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