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Diptera.info :: Identification queries :: Diptera (adults)
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Xanthochlorus tenellus ?
Eric Steckx
#1 Print Post
Posted on 20-06-2015 21:53
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 Aywaille ( B ) - 14.06.2015

Xanthochlorus tenellus ? or something else is possible ?
Eric Steckx attached the following image:


[139.77Kb]
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Paul Beuk
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Posted on 22-06-2015 12:37
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 I can only confirm the genus from these pictures.
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Eric Steckx
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Posted on 22-06-2015 13:21
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 Thank you Paul

Doesn't come X. ornatus with a darker mesonotum ?
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Paul Beuk
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Posted on 22-06-2015 20:52
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 There are more than two species. Wink You can just rule out ornatus
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Eric Steckx
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Posted on 22-06-2015 22:45
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 Yes, but fulvus and luridus are far east from Belgium.
Remains ultramontanus (from France according to Fa Eu, but which part ?), not known from Belgium ... yet Wink.

Thank you Paul
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Igor Grichanov
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Posted on 23-06-2015 07:48
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 I see only this alternative:
3. Surstylus in lateral view curved in an arc; epandrial lobe slender and not bilobed (Fig. 13). Prescutellar patch usually well defined in both sexes....... tenellus (Wiedemann)
- Surstylus in lateral view almost straight; epandrial lobe bilobed with ventral lobe itself trilobed apically (Fig. 11). Prescutellar patch often reduced or absent in female ........................... silaceus Chandler et Negrobov (2008: Dipterists Digest 15: 34, British species)
Edited by Igor Grichanov on 23-06-2015 07:49
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https://doli.vizrppnsuppl.com/
Eric Steckx
#7 Print Post
Posted on 28-06-2015 20:38
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 Thank you Igor
X. silaceus is not (yet) known from Belgium, but ...
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Some flies preserved in ethanol and then pinned often get the eyes sunken, how can this be avoided? Best answer: I usually keep alcohol-collected material in alcohol

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