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Diptera.info :: Identification queries :: Diptera (adults)
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[Ptochomyza asparagi] Agromyzidae???
HDumas
#1 Print Post
Posted on 14-04-2021 15:36
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Location: Southern France
Posts: 178
Joined: 24.04.09

Hello,
4 of these tiny flies were found in a rearing box containing galls on Asparagus acutiformis (supposed to be caused by Dasineura asparagi).
www.galerie-insecte.org/galerie/image/dos279/big/IMG_3488--.jpg
H. Dumas : France : La Ciotat : 13600 : 12/04/2021
Altitude : NR - Taille : 1 mm
Réf. : 279271

We searched in Agromyziidae and the closest genus we found were Phytomyza/Napomyza, but wing venation doesn't fit exactly.
So your opinion is wellcomeSmile
Edited by HDumas on 14-04-2021 22:46
Greetings from Provence
 
John Carr
#2 Print Post
Posted on 14-04-2021 20:01
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Location: Massachusetts, USA
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Should be Ptochomyza asparagi based on host, appearance, size, and range. A similar and slightly larger species is found in southeastern Europe.
Edited by John Carr on 14-04-2021 20:02
 
http://www.flickr.com/photos/31715949@N00
John Carr
#3 Print Post
Posted on 14-04-2021 20:04
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John Carr wrote:
Should be Ptochomyza asparagi based on host, appearance, size, and range. A similar and slightly larger species is found in southeastern Europe.


I checked again and P. asparagivora reaches at least as far north and west as Italy, so Ptochomyza sp.
 
http://www.flickr.com/photos/31715949@N00
HDumas
#4 Print Post
Posted on 14-04-2021 23:20
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Location: Southern France
Posts: 178
Joined: 24.04.09

Many thanks John!
I read in
Lonsdale, O. (2015). A new Afrotropical species of Phytomyza in the subgenus Ptochomyza (Diptera: Agromyzidae). African Invertebrates, 56(3), 637-643.
(here):
Phytomyza asparagi can be differentiated by usually having only a single notopleural seta medially on the notopleuron, the acrostichal setulae are usually in two rows, the pleuron is yellow with two spots on the katepisternum and meron, and the phallus is a simple membranous tube with a shorter distiphallus than that seen in the new species. Phytomyza asparagivora has an arista similar to the new species and the two notopleural setae are positioned posteriorly...
The only feature I'm able to check is the number of notopleural setae: I see only one, and it's in the middle of the notopleuron.
So is Phytomyza asparagi more likely?

I add a dorsal view for the three characteristic [of Ptochomyza] brown-to-black stripes that do not reach the posterior margin of the scutum ibid.
www.galerie-insecte.org/galerie/image/dos279/big/IMG_3516--.jpg
H. Dumas : France : La Ciotat : 13600 : 12/04/2021
Altitude : NR - Taille : 1 mm
Réf. : 279346
Greetings from Provence
 
John Carr
#5 Print Post
Posted on 15-04-2021 00:53
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If there is only one notopleura seta, it should be P. asparagi.

P. asparagi also has straighter M vein, longer and thinner arista, and longer and hairier first flagellomere than P. asparagivora. Your fly probably has the straight M vein. I can not judge the other differences.
 
http://www.flickr.com/photos/31715949@N00
HDumas
#6 Print Post
Posted on 15-04-2021 12:01
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Location: Southern France
Posts: 178
Joined: 24.04.09

Indeed M vein is straight. I can't appreciate either the other features unfortunatly.
Many thanks again for your help John!
Greetings from Provence
 
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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
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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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