Diptera.info :: Identification queries :: Diptera (adults)
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 Male Pollenia species?
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| Mtfyfe |
Posted on 03-01-2018 21:45
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Member Location: Posts: 188 Joined: 29.11.17 |
Found 27.12.17, Tuebingen, Southern Germany, at house front.
Mtfyfe attached the following image:  [100.55Kb] |
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| Mtfyfe |
Posted on 03-01-2018 21:45
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Member Location: Posts: 188 Joined: 29.11.17 |
Second picture
Mtfyfe attached the following image:  [247.9Kb] |
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| Mtfyfe |
Posted on 05-01-2018 21:47
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Member Location: Posts: 188 Joined: 29.11.17 |
Hi all, nobody has an opinion about this thread? Cheers, Lars |
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| Juergen Peters |
Posted on 05-01-2018 22:57
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 Member Location: northwest Germany Posts: 13649 Joined: 11.09.04 |
Hi Lars, Mtfyfe wrote: nobody has an opinion about this thread? I can only say Pollenia sp.. Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| johnes81 |
Posted on 06-01-2018 20:50
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 Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
photos are too small to judge various features. I have no doubt about rudis group. My bet is rudis but we cannot separate it from angustigena, hungarica and pediculata using these photos. Pollenia sp. rudis group is as far as we can go here. John and Nini. Naturalists not experts. |
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| Mtfyfe |
Posted on 07-01-2018 21:20
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Member Location: Posts: 188 Joined: 29.11.17 |
Thanks Jürgen and John, so this would leave at least four to chose from. Is there any feature, apart from the genitals, which could distinguish those four options? It is always good to know what to focus on for the next pictures to take. Especially since I am only taking pictures in the field and do no microscopic work. Cheers, Lars |
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| johnes81 |
Posted on 08-01-2018 13:08
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Member Location: Berlin, Germany Posts: 1978 Joined: 15.10.16 |
conjecture is not a scientific answer, so genitalia is the only accurate way to id many species of Pollenia. Dr. Rognes is the authority of this genus and Calliphoridae family. Dr. Rognes has made many publications available online. You can learn best from Dr. Rognes. http://www.knut-rognes.no/PublicationsInZoology.html I have added a photo of P. pediculata to the gallery which shows the bundle of pale hairs on the underside of the wing: https://diptera.info/photogallery.php?photo_id=10761 rudis will have black vestiture on the abdomen, front and hind femora. P. angustigena has golden yellow vestiture. You need clear photos of all of the legs. the pv of the front femora of many species is very helpful. some people think that all Pollenia require genitalia but this isn't true. several species can be easily identified by photo if the useful features are visible. for example, vagabunda, mayeri, atramentaria and amentaria. The rudis group is difficult. The head in profile view can be helpful. Still, the rudis group typically requires genitalia. I cannot see golden vestiture but the photos are not large enough to be sure. The hairs are not always obvious. The head reminds me most of rudis and if the vestiture is indeed black, then you probably have a male rudis in this photo. I cannot see the legs well enough to eliminate angustigena and pediculata. hungarica is near impossible to separate from rudis. In Germany, I find rudis more often at my residence than other Pollenia species. John and Nini. Naturalists not experts. |
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| Mtfyfe |
Posted on 08-01-2018 23:35
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Member Location: Posts: 188 Joined: 29.11.17 |
Thanks John, this was very detailed and informative. So for the next time I will give my best to get more detailed pictures. Lars |
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but don't see the image in the post.
