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Photo#2324346
Pegomya - male

Pegomya - Male
Syracuse, Onondaga County, New York, USA
October 17, 2023
Reared about 20 of these from larvae found mining leaves of rainbow chard in my garden. I kept the leaves in a tupperware for about a week, and the larvae either exited the leaves and pupated on the paper towel, or pupated within their mines. I carefully transferred the pupae and any remaining mature larvae to a container with dirt - the larvae burrowed into the dirt. I misted the soil every few days, and the vast majority if not all emerged about two weeks later.
Is this P. hyoscyami? I have other angles, including ventral.

Images of this individual: tag all
Pegomya - male Pegomya - male Pegomya - male Pegomya - male

Not sure
The eyes are too widely separated for the Pegomya hyoscami group, in which they are normally not as far apart as the width of the ocellar tubercle. The bristles on the tibia are a better match for P. betae than P. hyoscami. That species feeds on Chenopodiaceae in whatever sense the name was used in the early 1980s (Griffiths) or "Atriplex, Beta, Blitum, Chenopodiastrum, Chenopodium, Oxybasis, Spinacia" (Eiseman).

A shot of the fifth sternite, a U- or V-shaped structure near the tip of the abdomen, may help.

 
thanks
I have posted a ventral and dorsal view where the eyes and end of the abdomen should be better visible.

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