Mystery mine on American trailplant (Adenocaulon bicolor)

Here's a mystery I've been trying to solve for a decade now: a long, linear leaf mine of an agromyzid fly on Adenocaulon bicolor in the Pacific Northwest. It should be a relatively easy one to rear, since the puparium is formed in the leaf (hidden on the lower surface) and there are apparently at least two generations per year, with mines present from June to October.

photo of agromyzid mine in an American trailplant leaf @jmole, WA, 6/9/2021

photo of agromyzid mine in an American trailplant leaf @lumenal, OR, 7/6/2021

photo of agromyzid mine in an American trailplant leaf @lumenal, OR, 7/12/2022

photo of agromyzid mine in an American trailplant leaf @lumenal, OR, 7/18/2022

photo of agromyzid mine in an American trailplant leaf @flammulated, OR, 7/22/2021

photo of agromyzid mine in an American trailplant leaf @flammulated, OR, 7/30/2021

photo of agromyzid mine in an American trailplant leaf @brnhn, WA, 8/18/2022

photo of agromyzid mine in an American trailplant leaf @kurtsteinbach, WA, 8/30/2021

photo of agromyzid mine in an American trailplant leaf @brnhn, OR, 9/5/2021

photo of agromyzid mine in an American trailplant leaf @johndreynolds, BC, 9/18/2020

Publicado el 14 de octubre de 2022 por ceiseman ceiseman

Comentarios

They're active now in Oregon! https://www.inaturalist.org/observations/163545932
@cosmopterix, maybe you can keep an eye out...

Publicado por ceiseman hace 10 meses

Indeed! I remember searching for this years ago. Unfortunately our abundant populations of the host before the fire haven’t yet rebounded, so I am unlikely to encounter this casually. Next year I’ll be out and around more.

Publicado por cosmopterix hace 10 meses

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