Diptera.info :: Identification queries :: Diptera (adults)
 Gymnosoma rotundatum? -- Gymnosoma cf. dolycoridis
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| Michael Stemmer |
Posted on 08-02-2025 15:39
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 Member Location: D-53572 Unkel, Germany Posts: 511 Joined: 06.08.06 |
Hello, is my determination correct? Or is there some sort of fly, which looks quite similar? Location: Germany, Rhineland-Palatinum, 53572 Unkel, river Rhine valley, Stux hill, dry and warm habitat (grapeyards), nearby deciduous forest (oak, beech ...), May 27th 2023. Thanks in advance, Michael Michael Stemmer attached the following image:  [100.9Kb] Edited by Michael Stemmer on 09-02-2025 11:24 |
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| eklans |
Posted on 08-02-2025 15:52
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Member Location: Franconia, Germany Posts: 4185 Joined: 11.11.18 |
Gymnosoma is correct, but it's not rotundatum. Not easy from a single photo but I think it could be a male Gymnosoma dolycoridis: a dusted stripe from thorax to the tip of scutellum.
Greetings, Eric K |
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| Michael Stemmer |
Posted on 08-02-2025 16:09
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Member Location: D-53572 Unkel, Germany Posts: 511 Joined: 06.08.06 |
Hello Eric, I have two other photos, but they are not so good; i add them, maybe they are helpful for determination. Michael Stemmer attached the following image:  [111.54Kb] |
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| Michael Stemmer |
Posted on 08-02-2025 16:09
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Member Location: D-53572 Unkel, Germany Posts: 511 Joined: 06.08.06 |
#2
Michael Stemmer attached the following image:  [86.03Kb] |
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| eklans |
Posted on 08-02-2025 17:39
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Member Location: Franconia, Germany Posts: 4185 Joined: 11.11.18 |
A similar case: Gymnosoma is a complicated genus - see the T&H key: "Die Arten dieser Gattung sind revisionsbedürftig und auch für den Spezialisten zuweilen nur schwer zu bestimmen. Diese Tabelle ist daher provisorisch und gilt nur für typische Vertreter der mitteleuropäischen Fauna. Die letzte zusammenfassende Bearbeitung der Gattung stammt von Zimin (1966)." I'm not an expert but l think the dusted stripe from scutum to scutellum's tip makes G. dolycoridis. Greetings, Eric K |
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| Michael Stemmer |
Posted on 09-02-2025 07:58
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Member Location: D-53572 Unkel, Germany Posts: 511 Joined: 06.08.06 |
Hello Eric, so I´ll name this one "Gymnosoma cf. dolycoris", if you don´t contradict. Greetings from the Stux hill, Michael |
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| eklans |
Posted on 09-02-2025 10:46
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Member Location: Franconia, Germany Posts: 4185 Joined: 11.11.18 |
Gymnosoma cf. dolycoris is a good idea - and don't forget to add it to the title to attrace the expert. Hopefully a chance to leave the "cf."
Greetings, Eric K |
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| Michael Stemmer |
Posted on 09-02-2025 11:24
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Member Location: D-53572 Unkel, Germany Posts: 511 Joined: 06.08.06 |
Thank you, Eric! |
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