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Diptera.info :: Identification queries :: Diptera (adults)
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Mycetophilidae : Pseudexechia ?
Bruno48
#1 Print Post
Posted on 15-04-2021 21:09
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Location: France
Posts: 24
Joined: 04.11.20

I found it in a cave entrance.
It seems to me to belong to the genus Pseudexechia. Is that the case ?
Thank you for the help.

www.galerie-insecte.org/galerie/image/dos279/big/pseudexechia_Malaval.jpg
Bruno RIGHETTI : France : Les Bondons : 48400 : 06/12/2020
Altitude : 1000 m - Taille : 4 mm (LAA)
Réf. : 279487


www.galerie-insecte.org/galerie/image/dos279/big/Pseudexechia_aile_Malaval2.jpg
Bruno RIGHETTI : France : Les Bondons : 48400 : 06/12/2020
Altitude : 1000 m - Taille : 4 mm (LAA)
Réf. : 279488


www.galerie-insecte.org/galerie/image/dos279/big/Pseudexechia_thorax_Malaval.jpg
Bruno RIGHETTI : France : Les Bondons : 48400 : 06/12/2020
Altitude : 1000 m - Taille : 4 mm (LAA)
Réf. : 279486
 
Bruno48
#2 Print Post
Posted on 18-04-2021 17:11
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Location: France
Posts: 24
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Wing venation seems to be typical but is it suficient ?
 
Paul Beuk
#3 Print Post
Posted on 20-04-2021 07:59
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Exechiopsis s.str. With the specimen it would be possible to give the species name.
Paul

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Bruno48
#4 Print Post
Posted on 20-04-2021 18:15
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Location: France
Posts: 24
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Thank you Paul.if you agree I will send it to you.
Best regards
 
Paul Beuk
#5 Print Post
Posted on 21-04-2021 09:18
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It is most welcome. I'll send you the address.
Paul

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Paul Beuk
#6 Print Post
Posted on 01-05-2021 15:33
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For the time being it is going to be stored as Exechiopsis (Exechiopsis) nr. coremura. After first examination I ended up with two possible species but both of the scarce enough not to have been illustrated recently. In fact, the only illustrations of the genitalia were the ones in the original decsriptions (1928 and 1955, respectively) and not up to present day standards. After that I had a brief email exchange with Peter Chandler and he send me a reference specimen for one of the species, E. coremura, from Spain. This specimen clearly fits the illustration provided by Edwards in 1928 (left). Your specimen closely resembles that species in general structure but there are some distinct differences. The inner median lobe of the gonostylus is much narrower than that in the coremura specimen, the anterior setae on the ventral lobe of the gonostylus are somewhat thicker and more densly packerd and there are some differences on the complex of tergite IX and the cerci.
A possible alternative could be Exechiopsis (Exechiopsis) oltenica but the illustration of the genitalia of that species (right) only show the ventral aspect and not the dorsal aspect (which should show the inner median lobe). Until I have seen a reference specimen for that species I cannot rule that one out.
Paul Beuk attached the following image:


[62.23Kb]
Edited by Paul Beuk on 01-05-2021 15:38
Paul

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Bruno48
#7 Print Post
Posted on 02-05-2021 21:42
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Location: France
Posts: 24
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Thank you very much for this precise and detailed information
Bruno
 
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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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