Diptera.info :: Identification queries :: Diptera (adults)
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 Muscidae (NL)
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| blaauw7 |
Posted on 12-09-2014 15:37
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 Member Location: Wageningen, Netherlands Posts: 2500 Joined: 22.09.07 |
Found today in my garden, River Rhine area Netherlands. Muscidae, Lispe.......? Gr Dick blaauw7 attached the following image:  [163.24Kb] |
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| blaauw7 |
Posted on 12-09-2014 15:38
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Member Location: Wageningen, Netherlands Posts: 2500 Joined: 22.09.07 |
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blaauw7 attached the following image:  [160.58Kb] |
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| Stephane Lebrun |
Posted on 13-09-2014 09:17
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
It is Hydrophoria lancifer.
Stephane. |
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| javanerkelens |
Posted on 13-09-2014 21:22
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 Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
I had to look for quit some time, but I think this could be Zaphne divisa (looks very similar to H.lancifer) I asked Dick to send me a sharper view of this fly and the prealar seems indeed shorter. He will send me this specimen for a further ID. Johanna |
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| javanerkelens |
Posted on 16-09-2014 17:06
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
It is indeed Zaphne divisa (Meigen). Main differents between Z. divisa and H. lancifer: Zaphne divisa: prealar shorter than posterior notopleural seta 2-3 fine hairs just behind the posterior notopleural seta frontal vitta mostly orange calypters less yellowish Hydrophoria lancifer prealar as long or longer than posterior notopleural seta no fine hairs around the posterior notopleural seta frontal vitta mostly black calypters yellowish Johanna |
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| javanerkelens |
Posted on 16-09-2014 17:29
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
little hairs just behind the posterior notopleural seta
javanerkelens attached the following image:  [166.6Kb] |
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| Stephane Lebrun |
Posted on 16-09-2014 20:14
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
And now, I wonder how many times I could have given mistaken answers about H. lancifer.  I'm suddenly very embarrassed. 
Stephane. |
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| javanerkelens |
Posted on 16-09-2014 20:24
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
It is only that I recently again did a study on Zaphne species... I probable made the same mistake on many H. lancifer in the past. |
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| Stephane Lebrun |
Posted on 16-09-2014 20:39
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
I don't know if this can be added as a constant character, but the anterior katepiternal setae seems closer to each other in Zaphne divisa...
Stephane. |
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| javanerkelens |
Posted on 16-09-2014 20:48
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
I have lots of female H. lancifer, but only some female Z. divisa. I need more specimen of Z. divisa for a proper study on the characteristics, because I think, there must be also other differents to find as constant character. I will come back on this! Johanna Edited by javanerkelens on 16-09-2014 20:48 |
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| blaauw7 |
Posted on 16-09-2014 20:52
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Member Location: Wageningen, Netherlands Posts: 2500 Joined: 22.09.07 |
Thanks Both! If I find more, I will keep them for you Johanna Gr Dick |
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but don't see the image in the post.
