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Diptera.info :: Identification queries :: Diptera (adults)
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A Diptera I cannot place in a family
Gateside
#1 Print Post
Posted on 09-04-2021 18:02
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It has been suggested that this is a Heleomyzidae (based on venation), but the tibiae are too bristly to comply.
It has the wrong venation for Muscidae, and Fanniidae (on the basis of the anal veins).
It has been suggested it looks something like Pegomya bicolor (Anthomyiidae), and indeed it does. The venation on that is very similar, but not identical. In addition, the costa does not have any but the smallest spines, indicating that it might not even be an Anthomyiidae. I think the images showing small spines shows it is not a matter of insufficient resolution.
This fly looks quite distinctive, but I cannot even place it in a family! Does anyone know the answer?
Gateside attached the following image:


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Gateside
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Posted on 09-04-2021 18:03
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The legs with long spines
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Gateside
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Posted on 09-04-2021 18:05
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A very much lightened image of the head and thorax. Not a good focus, but the best I have.
Gateside attached the following image:


[262.56Kb]
 
Gateside
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Posted on 09-04-2021 18:06
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A rear view of the fly.
Gateside attached the following image:


[236.23Kb]
 
Gateside
#5 Print Post
Posted on 09-04-2021 18:14
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My best shot of the side of the head (which is a bit better than nothing!)
Gateside attached the following image:


[145.98Kb]
 
Tony Irwin
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Posted on 09-04-2021 18:54
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Mycophaga testacea may be another possibility.
You're best placed to judge, but it looks to me like it has a complete thoracic suture, which would support it being a calypterate, and as the anal vein reaches the wing margin, Scathophagidae and Anthomyiidae are the obvious contenders. Try running it through Mike's key to anthomyiid genera, and see what happens?
Tony
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Tony Irwin
 
Xylosoma
#7 Print Post
Posted on 09-04-2021 19:35
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Based on the whitisch hairs on the lower backside of the head, black tips of femora, bristles on legs, black hind corner of tergite 1 ... I'm tending to an immature female of Scathophaga inquinata.
Regards
Xylo
 
Tony Irwin
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Posted on 09-04-2021 20:12
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I'm happy with that. TumbsUp
Tony
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Tony Irwin
 
Gateside
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Posted on 10-04-2021 08:18
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Thsnks very mcuh, Xylo (and Tony). That seems to fit, from what I can see.
I have just looked at the British Scathophagidae web site, and a quote from the page on identifying the family in general is as follows:
"It can be quite tricky to decide when you are dealing with a Scathophagid since, in most keys, this family drops out at the end of the key to Calyptrate families if it is not a Muscid, Fanniid or Anthomyiid. They tend to be distinguished by the lack of features that characterise these families, rather than by anything very definite that is unique to the Scathophagidae. In general appearance they can easily be confused with Anthomyiidae and....."
That's about it! But it would have been better if I had got proper images of the head, so it was a bit more obvious it was a Scathophagidae. Smile

Nigel.
Edited by Gateside on 10-04-2021 08:19
 
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09.05.21 16:31
Extensions in uppercase are (and were) accepted for gif, jpg, jpeg and png

09.05.21 16:01
OK, thanks Roger, now if someone would just ID the fly I would be happy.

06.05.21 22:31
FTAO - Gordon; Please make sure that you use lower case, because attachments with extensions in upper case (capitals) are rejected. So sayeth GOD AKA Paul. Cool

06.05.21 21:40
A file called "Fly01a" has an UPPERCASE "F" Gordon. The site takes a dim view of UPPERCASE "'F's"!! awkward

06.05.21 06:50
OK, it has started working now, no idea what was going on.

06.05.21 06:41
I know I have been away a long time - but why can't I load a 63Kb file called Fly01a

15.04.21 17:02
Negrobov, Michael Ackland, Chris Thompson, Laszlo Papp... The Grim Reaper ravages in 2021

29.03.21 10:55
@PaulBeuk Thanks again mate- very useful! Smile

14.03.21 16:00
Check your Messenger.

11.03.21 18:23
Greetings! Does anyone have: Satchell's 1947 paper: The larvae of the British species of Psychoda (Diptera: Psychodidae)??? Many thanks Smile

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