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Photo#1733310
Chloropid fly? - Phytomyza gymnostoma

Chloropid fly? - Phytomyza gymnostoma
Middletown, Middlesex County, Connecticut, USA
September 29, 2019
Size: ca. 4 mm
I wouldn't expect grass flies to congregate on leek plants, as these were. Perhaps I am barking up the wrong tree.

Images of this individual: tag all
Chloropid fly? - Phytomyza gymnostoma Chloropid fly? - Phytomyza gymnostoma Chloropid fly? - Phytomyza gymnostoma

Moved
Moved from Phytomyzinae.

Moved
Moved from ID Request.

 
Phytomyza (Napomyza) gymnostoma
I now believe this is the allium leaf miner, Phytomyza gymnostoma or Napomyza gymnostoma. I found this reference

https://ento.psu.edu/extension/vegetables/pest-alert-allium-leafminer

with a photo that resembles my specimens. It has not previously been reported in Connecticut and seems to have arrived in the U.S. only in 2015. The above reference contains a range map.

John Carr once left a note
on a fly with strong bristles I mistook for a chloropid that stated -

A "Chloropidae" with strong bristles is usually Phytomyzinae.

I found that to be helpful. Not positive it applies to your fly.

 
Thank you
Thank you, John and John for heading me in the right direction and for the helpful comment that I will remember. I must admit that "Agromyzidae" flitted through my mind as I watched these creatures. "By their butts shall ye know them."

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