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Photo#1457599
Midrib miner, Triosteum - Phytomyza triostevena

Midrib miner, Triosteum - Phytomyza triostevena
Allamakee County, Iowa, USA
September 7, 2017
Midrib miners in Triosteum sp.

This leaf contains at least two midrib mines, both of which begin as narrow linear mines on the leaf blade and quickly move along (or in) a vein until they reach the midrib. The first mine starts near the tip of the leaf (top of image); the second (and more obvious) mine starts in the middle of the leaf on the right side of the midrib. A third linear mine in the leaf blade appears to terminate in a blotch.

More mines in Triosteum:



the last of which, found and reared by MJ in 2013, turned out to be Aulagromyza orbitalis.

Perhaps some of these belong to the same species, just mining a bit differently in different leaves?

Images of this individual: tag all
Midrib miner, Triosteum - Phytomyza triostevena Midrib miner, Triosteum - Phytomyza triostevena Midrib miner, Triosteum - Phytomyza triostevena Midrib miner, Triosteum - Phytomyza triostevena Midrib miner, Triosteum - Phytomyza triostevena

Moved
Moved from Leaf Miner Flies.

High-resolution versions of these photos would be great too!

No, I think you've just quadrupled the number
of known agromyzid mines on this host. The linear-blotch might be Aulagromyza orbitalis, but I'd need a closer look to say more.

 
Whoa!
That's exciting :-) Hopefully I'll get some adults.

Thanks so much for your attention to this and my other recent agromyzid posts...I went a little overboard posting the other day (without internet access at home it's easiest for me to post several things at a time).

 
Question
Is this the type of mine (or even the mine) that your specimen "P" (CSE4663) emerged from? Your notes said it was a midrib/petiole borer...

 
Specimen "P" (CSE4663)
was from the same collection as this example, but it's a different individual. What I did was, I collected several similarly mined leaves and then (over the course of a few weeks) opened up the mines and removed the puparia, isolating them in separate vials. Besides what notes I included in the spreadsheet sent to you, I see that my notes for CSE4663 also say, "Puparium removed 9/26/17 from midrib mine on Triosteum leaf." Somehow that additional bit of info didn't make it into the spreadsheet I sent to you.

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