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For a project rearing larvae of a small Tortoise beetle we are keeping various plants of Silene dioica in a confined space (glass cylinder).

While working on the beetles yesterday I found several of these little Agromyzidae on the leafs of one plant and also puparia (full and empty) nearby. I deposited two full puparia in a jar and today new flies emerged, so the puparia can safely be assumed to be the same species.

According to the BRC Database of Insects and their Food Plants there would be 3 species of Agromyzidae known from Silene dioica and of those, to my layman's eye only Amauromyza flavifrons looks similar to our flies.

For a publication on the life history of the Tortoise beetles we would like to list accompanying species as good as we can, so it would be appreciated if we can get an ID/confirmation on these flies |t

A few specimen were collected, so if specific details are needed for ID that are not shown clearly enough on the images, I might be able to provide these (or send you the flies).

Thanks in advance for your time!

Cheers, Arp

More images with the observation on waarneming.nl