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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:


H. Dumas : France : La Ciotat : 13600 : 30/09/2024
Altitude : NR - Taille : 4.5 mm
Réf. : 350782


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?

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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.