Diptera.info :: Identification queries :: Diptera (adults)
 Lauxaniidae
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| blowave |
Posted on 20-10-2010 20:03
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 Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
Hello, 15th October,on Ivy. My garden near Lincoln UK. Approx. 5mm. It has a big end! I have several photos, posting 4 pics. Janet 
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| blowave |
Posted on 20-10-2010 20:04
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Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
pic 2
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| blowave |
Posted on 20-10-2010 20:04
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Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
pic 3
blowave attached the following image:  [78.4Kb] http://cubits.org... |
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| blowave |
Posted on 20-10-2010 20:05
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Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
pic 4
blowave attached the following image:  [106.44Kb] http://cubits.org... |
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| rvanderweele |
Posted on 20-10-2010 20:55
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Member Location: Leiden, the Netherlands Posts: 1988 Joined: 01.11.06 |
M. platycephala female. Some females have a big end.....OMG...wrong sense of humor...I know...males as well....
ruud van der weele rvanderweele@gmail.com |
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| blowave |
Posted on 20-10-2010 21:30
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Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
Thank you Ruud! There are no photos of this one in the gallery.. I'll put some in! I guess this is a female with the big end. 
http://cubits.org... |
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| Mark-uk |
Posted on 21-10-2010 01:49
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 Member Location: UK - Hampshire Posts: 792 Joined: 01.02.10 |
I thought platycephala only has one sternopleural bristle and biserial Acrostichals? most of the females of platycephala I see have eversible sense organs in the membrane at each side of abdomen. I couldn't confirm from these pictures, without photo of inner front femur, but this has a rorida 'look and feel' Edited by Mark-uk on 21-10-2010 01:50 |
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| rvanderweele |
Posted on 21-10-2010 05:20
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Member Location: Leiden, the Netherlands Posts: 1988 Joined: 01.11.06 |
If I look at the last photo I think I see 1 sternopleural, but if I see the top photo, I agree Mark, I think there are two. And if you look at photo nr 2 indeed you see the ac's, which fit rorida well. So, I think you are right. I say 99% sure it is rorida. Indeed, under the microscope you first check the first pairs of femurs quickly.
ruud van der weele rvanderweele@gmail.com |
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| rvanderweele |
Posted on 21-10-2010 06:50
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Member Location: Leiden, the Netherlands Posts: 1988 Joined: 01.11.06 |
Hallo, it is me again. During my drive to my office I have been thinking about platycephala. Mark, your observation about the organs is true. I remember know that years and years ago I heard somebody say that these organs are feromonal glands. But I have nowhere read about it. Now you call them sens organs. What do we know about these organs or glands? It is true that they are sometimes very big.
ruud van der weele rvanderweele@gmail.com |
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| blowave |
Posted on 21-10-2010 11:07
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Member Location: LINCOLN, UK Posts: 3151 Joined: 27.06.07 |
Thanks Mark, I know I already have M. rorida. I haven't submitted any photos for the gallery, I like to give a little time just in case! Photos are not always the easiest to see details or even recognise them. I don't have a clear enough shot of the inner front femur. I don't know where these eversible sense organs are but I can try to find out for future reference! Well there's one explanation on google books.. http://books.goog...mp;f=false http://cubits.org... |
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| Mark-uk |
Posted on 21-10-2010 18:17
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Member Location: UK - Hampshire Posts: 792 Joined: 01.02.10 |
Collin descibes them as "eversible sense organs", I would love to know ther true function. they are difficult to descibe, but they are very clear and difficult to overlook. |
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| rvanderweele |
Posted on 21-10-2010 18:27
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Member Location: Leiden, the Netherlands Posts: 1988 Joined: 01.11.06 |
As far as I remember Laszlo Papp called them feromone glands. But I do not know where he had this information from.
ruud van der weele rvanderweele@gmail.com |
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