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Fly mine on Triosteum perfoliatum - Aulagromyza cornigera

Fly mine on Triosteum perfoliatum - Aulagromyza cornigera
Dearborn, Wayne County, Michigan, USA
May 22, 2018
Stem with dense glandular hairs with scattered longer hairs ID species of plant. Mine was unoccupied, and of slightly different morphology than another mine I found on same species of plant. The area also has many Lonicera with fly mines.

Moved from Leaf Miner Flies.

Looks like cornigera all right... it would be great if you can collect larvae next year from this host. It's also worth watching throughout the year, since John van der Linden has found three different agromyzid mines on Triosteum that don't match anything that is known.

I will monitor these
This is not a particularly common plant at this site, but I have mapped all that I've found and will keep an eye out.

I also have one potted to put in a greenhouse with Phyl. emberizaepen. moths to see if they'll use it.

As you may know...
Terry Harrison has reared "Phyllonorycter mariaeella" (which may be the same species) from Triosteum in Illinois (see

I found mines
Last fall that appeared to be P. ember/maria on Triosteum. I overwintered two occupied mines. One was a dud, the other produced a Mesochorus wasp that I've had in batches of moths. A hyperparasite of Microgastrinae wasps, according to Jose Fernandez-Triana.

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