Diptera.info :: Identification queries :: Diptera (adults)
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 unknown hydrellia
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| Mario Renden |
Posted on 08-01-2025 17:40
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Member Location: Posts: 759 Joined: 04.05.15 |
On 2nd January 2025 I took pictures of this hydrellia species in Den Helder, The Netherlands. Can someone please identify it? Thanks a lot. Greetings, Mario Renden
Mario Renden attached the following image:  [34.96Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:45
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 2
Mario Renden attached the following image:  [29.95Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:45
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 3
Mario Renden attached the following image:  [26.71Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:46
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 4
Mario Renden attached the following image:  [34.1Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:46
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 5
Mario Renden attached the following image:  [32.43Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:46
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 6
Mario Renden attached the following image:  [35.43Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:47
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 7
Mario Renden attached the following image:  [21.33Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:47
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 8
Mario Renden attached the following image:  [35.73Kb] |
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| Mario Renden |
Posted on 08-01-2025 17:47
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Member Location: Posts: 759 Joined: 04.05.15 |
picture 9
Mario Renden attached the following image:  [19.16Kb] |
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| Tony Irwin |
Posted on 09-01-2025 21:59
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 Member Location: Norwich, England Posts: 7337 Joined: 19.11.04 |
Not all of the diagnostic characters are visible, but if we assume that this is probably a common species, it is most likely H. albiceps (= maura and modesta). In this species, and the equally common griseola, the mid-femur lacks a row of posteroventral bristles. However in albiceps the notopleuron is at least partly brown, like the dorsum, whereas in griseola it is evenly grey, contrasting with the dorsum.
Tony ---------- Tony Irwin |
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| Mario Renden |
Posted on 09-01-2025 23:10
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Member Location: Posts: 759 Joined: 04.05.15 |
Dear Tony and others, I have added some pictures of a mid-femur to hopefully make identification species level possible for 100%. Thanks a lot. Greetings, Mario Renden |
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| Mario Renden |
Posted on 09-01-2025 23:11
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Member Location: Posts: 759 Joined: 04.05.15 |
mid-femur
Mario Renden attached the following image:  [39.75Kb] |
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| Mario Renden |
Posted on 09-01-2025 23:11
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Member Location: Posts: 759 Joined: 04.05.15 |
mid-femur
Mario Renden attached the following image:  [14.86Kb] Edited by Mario Renden on 09-01-2025 23:12 |
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| Mario Renden |
Posted on 09-01-2025 23:13
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Member Location: Posts: 759 Joined: 04.05.15 |
mid-femur
Mario Renden attached the following image:  [16.51Kb] Edited by Mario Renden on 09-01-2025 23:14 |
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| Tony Irwin |
Posted on 10-01-2025 14:10
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Member Location: Norwich, England Posts: 7337 Joined: 19.11.04 |
Mario - assuming that is the left mid-femur, it's clear that the posteroventral row is absent, so I'm quite confident that is is albiceps. (To be more confident, it would be best to see the genitalia of a male.)
Tony ---------- Tony Irwin |
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| Mario Renden |
Posted on 10-01-2025 15:12
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Member Location: Posts: 759 Joined: 04.05.15 |
Thanks Tony. |
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