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Diptera.info :: Identification queries :: Diptera (adults)
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[Pegomya hyoscyami group] Anthomyiidae ex Atriplex halimus
HDumas
#1 Print Post
Posted on 05-11-2024 19:49
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Location: Southern France
Posts: 188
Joined: 24.04.09

Hello,
Two larvae get out of a leaf of Atriplex halimus growing along the mediterranean sea. They pupate in the rearing box and two males emerges.
Here is one of them:

www.galerie-insecte.org/galerie/image/dos350/big/Ex%20HAtiplex.jpg
H. Dumas : France : La Ciotat : 13600 : 30/09/2024
Altitude : NR - Taille : 4.5 mm
Réf. : 350782

www.galerie-insecte.org/galerie/image/dos350/big/Dorsal--.jpg
H. Dumas : France : La Ciotat : 13600 : 30/09/2024
Altitude : NR - Taille : --
Réf. : 350817

I don't see the "short blunt spines on the lobes of the fifth sternite" of Delia albula.

May I have your opinion?
Edited by HDumas on 09-11-2024 18:05
Greetings from Provence
 
John Carr
#2 Print Post
Posted on 05-11-2024 21:26
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Location: Massachusetts, USA
Posts: 10193
Joined: 22.10.10

Is Delia albula a leaf miner in Atriplex?

Delia echinata larvae move through stems between leaves. Adult males have at least 2 av, 4 ad, and 3 pd on hind tibia. A few members of the Pegomya (Pegomya) hyoscami species group are leaf miners in Chenopodiaceae. Those are the only Anthomyiidae I know of that might have come out of your leaf mines. A picture of the 5th sternite might help ID.
 
http://www.flickr.com/photos/31715949@N00
HDumas
#3 Print Post
Posted on 06-11-2024 22:14
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Location: Southern France
Posts: 188
Joined: 24.04.09

I know nothing about Delia albata, except that it has been found along the Channel (Zuydcoote). The genus Delia was just proposed as a possibility on the french forum.

Here are two other pictures if they can help:
the last sternites:
www.galerie-insecte.org/galerie/image/dos351/big/Sternites-%20Face--.jpg
H. Dumas : France : La Ciotat : 13600 : 30/09/2024
Altitude : NR - Taille : --
Réf. : 351846

the left hind tibia (front view):
www.galerie-insecte.org/galerie/image/dos351/big/Left%20hind%20leg%20-%20ant.%20view--.jpg
H. Dumas : France : La Ciotat : 13600 : 30/09/2024
Altitude : NR - Taille : --
Réf. : 351845
Greetings from Provence
 
John Carr
#4 Print Post
Posted on 06-11-2024 23:18
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Location: Massachusetts, USA
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The shape of the 5th sternite does not match Delia echinata. Some members of the Pegomya hyoscyami group have the arms incurving at the tips like your fly and I think your fly belongs to that group. I do not have a reference for European species, other than those that are also found in North America.
Edited by John Carr on 06-11-2024 23:19
 
http://www.flickr.com/photos/31715949@N00
John Carr
#5 Print Post
Posted on 06-11-2024 23:26
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Location: Massachusetts, USA
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The paper by Michelsen separating the European species is online.
https://www.resea...thomyiidae
 
http://www.flickr.com/photos/31715949@N00
HDumas
#6 Print Post
Posted on 07-11-2024 17:53
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Location: Southern France
Posts: 188
Joined: 24.04.09

Many thanks for your help John!
According to Michelsen (1980), this male should belong to the group exilis/ Hyoscyami (width of interfrontal area vs ocellus; shape of abdomen and postabdomen), but I'm not able to appreciate the features of the genitalia.
Edited by HDumas on 09-11-2024 18:04
Greetings from Provence
 
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