Diptera.info :: Identification queries :: Diptera (adults)
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 Anthomyiidae - > Hylemya vagans/nigrimana
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| Marion Friedrich |
Posted on 26-01-2019 17:28
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Member Location: Saxony, Germany Posts: 1129 Joined: 07.10.09 |
Hello, I found this fly in Germany, Saxony in a park near a small river in October. Is the fly a Hydrophoria linogrisea or belongs it to another species? Thanks, Marion Marion Friedrich attached the following image:  [117.66Kb] Edited by Marion Friedrich on 27-01-2019 11:08 |
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| Marion Friedrich |
Posted on 26-01-2019 17:29
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Member Location: Saxony, Germany Posts: 1129 Joined: 07.10.09 |
2nd picture
Marion Friedrich attached the following image:  [135.53Kb] |
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| Nikita Vikhrev |
Posted on 26-01-2019 18:31
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 Member Location: Moscow, Russia Posts: 9220 Joined: 24.05.05 |
I think it is Hylemya vagans/nigrimana
Nikita Vikhrev - Zool Museum of Moscow University |
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| Marion Friedrich |
Posted on 26-01-2019 23:10
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Member Location: Saxony, Germany Posts: 1129 Joined: 07.10.09 |
Thank you very much for ID, Nikita. I searched for the two species in the gallery and the forum and found this comment: javanerkelens wrote: Fore femur infuscated = H.vagans Fore femur clear yellow = H. nigrimana I could not find a translation for infuscated, but think it means something like darkened. I have an old picture from a fly identified as Hylemya vagans which has darker, greyish looking fore femora. Compared to that one all femora of this fly have a yellowish coloration. Is it possible to exclude H. vagans? Marion Here is the picture from H. vagans Marion Friedrich attached the following image:  [142.03Kb] |
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| Nikita Vikhrev |
Posted on 27-01-2019 00:15
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Member Location: Moscow, Russia Posts: 9220 Joined: 24.05.05 |
No, Marion, the characters you mentioned work for males, but not for females. See M. Ackland's key below: HYLEMYA Males 1 The two rows of acrostichal setae rather widely separated, between them, at least in front of suture, two rows of fine setulae. T3 with a pv preapical as well as an av preapical seta (S.g. Hylemyza) partita Mg. Acrostichal setal rows close together, between them no fine setulae. T3 without a pv apical 2 2 Legs not completely black, at least tibia (especially mid and hind tibia) clear yellow or orange 3 Legs completely black or at most t3 obscurely and partly transparent brownish orange when viewed in certain directions 4 3 All femora black at least in basal two-thirds, only tibiae yellow or orange vagans Pz. Only fore femora black, mid and hind femora yellow or orange as are tibiae nigrimana Mg. 4 Surstylus long and slender, apices slender and curved backwards. T3 entirely black variata Fall. Surstylus short, widened at apices, curved forwards. T3 often obscurely orange-brown. urbica Wulp HYLEMYA Females 1 The two rows of acrostichals rather widely separated, between them at least in front of suture two rows of fine setulae partita Mg. – Acrostichal rows close together, between them no fine setulae 2 2 All femora black, at most knees lightened variata Schnabl, urbica Wulp – At least mid and hind femora yellow vagans Pz. nigrimana Mg. Nikita Vikhrev - Zool Museum of Moscow University |
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| Marion Friedrich |
Posted on 27-01-2019 11:06
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Member Location: Saxony, Germany Posts: 1129 Joined: 07.10.09 |
Hello Nikita, many thanks for answering my question and the detailed explanation. Best regards, Marion  |
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but don't see the image in the post.