Diptera.info :: Identification queries :: Diptera (adults)
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 robust fly -> Pollenia cf vera
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| treebeard |
Posted on 30-04-2018 21:26
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
Slovakia,Banska Bystrica, 22.04.2018, meadow with hedgerows Thank you in advance Matej treebeard attached the following image:  [256.72Kb] Edited by treebeard on 02-05-2018 07:50 |
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| treebeard |
Posted on 30-04-2018 21:27
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
this should be the same specimen
treebeard attached the following image:  [256.29Kb] |
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| treebeard |
Posted on 30-04-2018 21:28
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
also this one is the same
treebeard attached the following image:  [239.51Kb] |
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| John Carr |
Posted on 30-04-2018 22:28
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 Member Location: Massachusetts, USA Posts: 7381 Joined: 22.10.10 |
Pollenia |
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| johnes81 |
Posted on 30-04-2018 23:13
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 Member Location: Berlin, Germany Posts: 1903 Joined: 15.10.16 |
Pollenia, indeed. how large is it? do you think 12mm or so? very important to know. John and Nini. Naturalists not experts. |
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| treebeard |
Posted on 01-05-2018 06:40
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
It was smaller than, for example, large Tachinidae, I think 10 - 12 mm. But it is quite difficult to guess. |
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| johnes81 |
Posted on 01-05-2018 17:19
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Member Location: Berlin, Germany Posts: 1903 Joined: 15.10.16 |
hello treebeard, yes, i agree, conjecture about size is difficult in the field. i just ask because i suspect a particular species. note the yellow wing base, 5 marginal scutellar setae, black basicosta, dark body, dark abdomen. If i am correct, then you have a rare photo of a Pollenia. Two things bother me: the longitudinal tessellations on the abdomen (supposed to be indicative of semicinerea group) and no clear shot of the hind leg to confirm or eliminate semicinerea group. I see conflicting features to support semicinerea group. I suspect it to be in the amentaria group, which will be only one possibility needing confirmation. since i only have vague keys and no specimens to work with, i will need a confirmation about my diagnosis. please wait until i recieve an email about this species. I will return here when i have an answer ... John and Nini. Naturalists not experts. |
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| treebeard |
Posted on 01-05-2018 18:21
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
Thank you for your effort. I will wait. Matej |
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| johnes81 |
Posted on 01-05-2018 22:13
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Member Location: Berlin, Germany Posts: 1903 Joined: 15.10.16 |
I have an expert opinion which matches my opinion: this fly could be Pollenia vera. I place it in the amentaria group for the following reasons: yellow wing base, black basicosta, 5 marginal scutellar setae, narrow frons, guessing that the carina is conspicuous based upon experience, one ad on t2 and overall dark-to-black appearance. Of all of the amentaria group, it seems to be the best fit for vera. However, we cannot be 100% certain without genitalia. I have been surprised by Pollenia many times, thus, you must retain a cf with this diagnosis. Pollenia cf vera please add to gallery atleast muchazavalit2.jpg please collect if you see it again and send it to me. Thank you very much. Edited by johnes81 on 01-05-2018 22:16 John and Nini. Naturalists not experts. |
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| treebeard |
Posted on 02-05-2018 08:07
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Member Location: Slovakia Posts: 415 Joined: 13.08.13 |
Thank you very much! Of course, I will add it Best regards Matej |
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