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 Pseudocollinella humida :) (ID Tony Irwin)
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| javanerkelens |
Posted on 31-05-2009 15:53
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 Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
28-may-2009 Amsterdam Artis , about 2-3mm I'm a bit lost whit this one...i think Sphaeroceridae, but got the strong feeling...it is not. Joke van Erkelens javanerkelens attached the following image:  [104.2Kb] Edited by javanerkelens on 05-11-2014 22:02 |
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| javanerkelens |
Posted on 31-05-2009 16:41
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
Interfrontals present, frontals strongly to outside bent.....maybe Canacidae..? Joke van Erkelens Edited by javanerkelens on 31-05-2009 16:43 |
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| Paul Beuk |
Posted on 31-05-2009 19:24
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Ephydridae...
Paul - - - - Paul Beuk on https://diptera.info |
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| Tony Irwin |
Posted on 31-05-2009 19:25
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 Member Location: Norwich, England Posts: 7353 Joined: 19.11.04 |
Yes, looks like Canace nasica
Tony ---------- Tony Irwin |
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| javanerkelens |
Posted on 31-05-2009 19:53
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
Canace nasica not found yet in the Netherlands (only Xanthocanace ranula, but looks different) It was found in a Zoo(on the ground near water), so when it is a Canace nasica, I think it wil be a doubtful species! Thanks Joke |
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| Paul Beuk |
Posted on 31-05-2009 21:24
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Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Well, that puts me back in my place agin. 
Paul - - - - Paul Beuk on https://diptera.info |
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| Tony Irwin |
Posted on 05-11-2014 18:24
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Member Location: Norwich, England Posts: 7353 Joined: 19.11.04 |
It feels good to raise this 5-year old thread and set the record straight. Not Canace, but a sphaerocerid, as Joke first thought - Pseudocollinella humida, a species that looks very like both Canaceidae and Ephydridae. The long arista gives it away, and although the hind metatarsus does not appear to be swollen, it is short.
Tony ---------- Tony Irwin |
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| Ectemnius |
Posted on 05-11-2014 18:35
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Member Location: The Netherlands Posts: 865 Joined: 22.11.11 |
Hello Tony, I'm glad you did raise the topic. I caught a female Canace nasica in September at Terneuzen, Zeeland The Netherlands. The only photo of a Dutch specimen I found was the photo by Joke. However my specimen is much more gray in the face then shown here. Also the bristles under the eyes are enormous on my specimen yet not visible in the photo. So you're reply cleared my confusion about these and my specimen. Greetings, Ectemnius |
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| Tony Irwin |
Posted on 05-11-2014 18:46
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Member Location: Norwich, England Posts: 7353 Joined: 19.11.04 |
Hi Ectemnius - see http://www.dipter...d_id=64112 for a recent specimen from the Netherlands, collected by Niels. Ruud has also taken a couple this year. Perhaps the three of you can get together to publish it as new to the Netherlands? 
Tony ---------- Tony Irwin |
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| javanerkelens |
Posted on 05-11-2014 22:07
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Member Location: Netherlands Posts: 2962 Joined: 18.10.07 |
And again, it shows how photos can be confusing. I also must confess, that I was a little surprised, Tony still had kept this thread in his memory..... compliment! And for Elias...you have to search for another 'live' photo of Canace nasica and see you next saturday. Johanna |
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| Paul Beuk |
Posted on 07-11-2014 09:56
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Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Tony Irwin wrote: It feels good to raise this 5-year old thread and set the record straight. Not Canace, but a sphaerocerid, as Joke first thought - Pseudocollinella humida, a species that looks very like both Canaceidae and Ephydridae. The long arista gives it away, and although the hind metatarsus does not appear to be swollen, it is short. As I wrote to Tony: this certainly is not Pseudocollinella humida. It is one of the regular victims of my window surveys in the museum and it is not [this] brownish in aspect and does not have the whitish face and genae. Moreover, the face appears to be swollen (like in ephydrids) and I am not familiar with that in our sphaerocerids. Admitted, it was collected in the zoo and [could] be of an entirely exotic origin, but I still cannot think of this as a sphaerocerid.
Paul - - - - Paul Beuk on https://diptera.info |
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| Tony Irwin |
Posted on 07-11-2014 11:23
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Member Location: Norwich, England Posts: 7353 Joined: 19.11.04 |
And to use Paul's phrase - "Well, that puts me back in my place again! " All I can say is that there are several images purporting to be P.humida on-line, which seem to me to be the same species, e.g http://www.discov...mp;res=640 Tony ---------- Tony Irwin |
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| Paul Beuk |
Posted on 07-11-2014 15:10
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Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Okay, I concede: I pulled one of my Pseudocollinella's from alcohol, dried it and under rather strong (white) light it does give that brownish hue and the face amd genae light up. My impression of the degree of the swelling face may have been influenced by the angle of the shot. P. humida is one of the more common species and certainly turns up in 'ephydrid' favouring conditions. That shows that it is something completely different to collect the blackish flies from windows with the light in your face and identifying flies from pictures taken using flash.
Paul - - - - Paul Beuk on https://diptera.info |
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| Tony Irwin |
Posted on 07-11-2014 15:14
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Member Location: Norwich, England Posts: 7353 Joined: 19.11.04 |
Empirical science to the rescue!
Tony ---------- Tony Irwin |
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