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Diptera.info :: Identification queries :: Diptera (adults)
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Muscidae: Hydrotaea dentipes? (28.05.18)
Juergen Peters
#1 Print Post
Posted on 30-05-2018 03:37
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Location: northwest Germany
Posts: 13592
Joined: 11.09.04

Hello,

these 5-6 mm flies are very numerous these days in our garden and at the forest border (northwest Germany).
Juergen Peters attached the following image:


[59.25Kb]
Best regards,
Jürgen

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Juergen Peters
Borgholzhausen, Germany
WWW: http://insektenfo...
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Juergen Peters
#2 Print Post
Posted on 30-05-2018 03:37
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Location: northwest Germany
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Another individual.
Juergen Peters attached the following image:


[75.09Kb]
Best regards,
Jürgen

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Juergen Peters
Borgholzhausen, Germany
WWW: http://insektenfo...
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johnes81
#3 Print Post
Posted on 30-05-2018 08:40
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Location: Berlin, Germany
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Hello Jürgen,

I found something similar yesterday. I tried to figure out what it is and i noticed the wing venation as Muscidae. I've never seen a Hydrotaea before but i suspected my specimen to be Hydrotaea. I looked through the gallery and i think that it matches male Hydrotaea diabolus better. I only base this opinion on the width of the frons. The fly in your photos looks similar to the one that i have found. My point is that if you do not get a reply, then i will post examination results from my specimen. I will try to dissect genitalia within the next week. I think that dentipes has black haltere and a narrow frons. I know nothing about Hydrotaea but i will know more now that i have a specimen Smile

so maybe Hydrotaea diabolus.
John and Nini. Naturalists not experts.
 
Juergen Peters
#4 Print Post
Posted on 30-05-2018 10:13
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Location: northwest Germany
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Hello John,

hmm... I had excluded Hydrotaea diabolus because of its dark, shiny black colour and the "spur" on its mid leg.

Below pics of confirmed (if I remember correctly, by Stéphane Lebrun) Hydrotaea dentipes (upper) and diabolus (lower).
Juergen Peters attached the following image:


[153.25Kb]
Best regards,
Jürgen

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Juergen Peters
Borgholzhausen, Germany
WWW: http://insektenfo...
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http://insektenfotos.de/forum
johnes81
#5 Print Post
Posted on 30-05-2018 11:27
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Location: Berlin, Germany
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Stéphane is always right, in my opinion. I cannot disagree with those photos. However, the frons is just too wide in your recent photos.

I have a specimen, so i will eventually know if mine is diabolus or not.
You can wait for Nikita as he is a specialist. I am just saying that mine looks similar to your photo and i already exclude dentipes. Both species are garden dwellers.

Smile
John and Nini. Naturalists not experts.
 
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