Diptera.info :: Identification queries :: Diptera (adults)
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 Ephydridae SW Sweden 16 Jun 2015 -> Hydrellia sp.
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| Johane |
Posted on 24-06-2015 12:04
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
Is it possible to tell genus or species?
Johane attached the following image:  [156.57Kb] Edited by Johane on 01-07-2015 02:06 |
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| Johane |
Posted on 24-06-2015 12:04
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
2nd photo
Johane attached the following image:  [166.99Kb] |
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| Johane |
Posted on 24-06-2015 12:05
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
3rd photo
Johane attached the following image:  [189.33Kb] |
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| Johane |
Posted on 24-06-2015 12:05
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
4th photo
Johane attached the following image:  [194.47Kb] |
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| Tony Irwin |
Posted on 24-06-2015 12:10
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 Member Location: Norwich, England Posts: 7232 Joined: 19.11.04 |
Hydrellia female. I can't tell which species from the photos.
Tony ---------- Tony Irwin |
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| Johane |
Posted on 24-06-2015 12:33
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
Thanks Tony! Are females identifiable at all and what is needed to be seen then? |
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| Tony Irwin |
Posted on 24-06-2015 18:34
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Member Location: Norwich, England Posts: 7232 Joined: 19.11.04 |
The females are more difficult than the males, as we rely on external features to identify them. The male genitalia give good characters. Where the species is distinctive in terms of colouration and chaetotaxy, then we can make a good guess, but some of the commonest species (e.g maura and griseola) are very difficult to separate as females. Tony ---------- Tony Irwin |
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| Johane |
Posted on 27-06-2015 01:14
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
Do you mean that this female is impossible to identify, or are there important features that are not visible in the photos? I have no key to Hydrellia females. |
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| Tony Irwin |
Posted on 28-06-2015 20:38
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Member Location: Norwich, England Posts: 7232 Joined: 19.11.04 |
I find some female Hydrellia impossible to identify. The keys to males may work for the females, if the species is distinctively coloured, but this does not appear to be one of those, so I doubt that we will get a positive identification. Most Hydrellia occur abundantly where you find them, so it's much better to collect more in the hope that you find a male. Tony ---------- Tony Irwin |
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| Johane |
Posted on 01-07-2015 02:05
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Member Location: Gothenburg, Sweden Posts: 1962 Joined: 27.08.13 |
Thanks for your help! I will do my best to catch a male. |
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