Diptera.info :: Identification queries :: Diptera (adults)
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 Gymnosoma (Gymnosoma costatum)
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| christoophe |
Posted on 03-12-2017 16:17
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 Member Location: France Provence Posts: 1955 Joined: 06.02.08 |
Hello Collected in August in eastern France. Size 4 mm I find Gymnosoma inornatum, but I do not have genitalia drawings to check. pic 1 christoophe attached the following image:  [183.53Kb] Edited by christoophe on 07-12-2017 16:49 |
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| christoophe |
Posted on 03-12-2017 16:17
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Member Location: France Provence Posts: 1955 Joined: 06.02.08 |
pic 2
christoophe attached the following image:  [194.87Kb] |
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| christoophe |
Posted on 03-12-2017 16:17
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Member Location: France Provence Posts: 1955 Joined: 06.02.08 |
pic 3
christoophe attached the following image:  [198.74Kb] Edited by christoophe on 03-12-2017 16:18 |
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| christoophe |
Posted on 03-12-2017 16:18
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Member Location: France Provence Posts: 1955 Joined: 06.02.08 |
pic 4
christoophe attached the following image:  [167.35Kb] |
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| Zeegers |
Posted on 03-12-2017 19:12
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Member Location: Soest, NL Posts: 18518 Joined: 21.07.04 |
Inornatum and costatum are very similar. It seems, the dust pattern on thoracic dorsum is like nudifrons (opposted to rotundatum). Is that correct ? That would suggest costatum s.s. the shape of the black spots on tergites suggests costatum as well. Theo |
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| christoophe |
Posted on 03-12-2017 20:06
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Member Location: France Provence Posts: 1955 Joined: 06.02.08 |
With the Tschorsnig key, I arrived easily at costatum. And with Cerretti's key, I doubted because I do not know this species. It's Gymnosoma costatum. Thank you Edited by christoophe on 03-12-2017 20:06 |
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but don't see the image in the post.
