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Photo#1592292
Leaf miners, Maianthemum, communal

Leaf miners, Maianthemum, communal
Linne Doran, King County, Washington, USA
September 13, 2018
VIDEOS: Larvae feeding #1 ~ Larvae feeding #2

Gregarious dipterans mining a leaf of Maianthemum dilatatum

Offhand I can't find any previous records of this sort of thing on Maianthemum, but Eiseman (2018) reports "scathophagid larvae forming blotch mines in Trillium ovatum [also in order Liliales --John v.] in Washington in early October. On some leaves, the elongate, white eggs were attached to the lower surface in clusters of 2–3, while one leaf had one group of 8 eggs and another group of 18." (p. 518)

Source: Eiseman, C. 2018. Leafminers of North America

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Leaf miners, Maianthemum, communal Leaf miners, Maianthemum, communal Leaf miners, Maianthemum, communal Leaf miners, Maianthemum, communal Leaf miners, Maianthemum, communal Leaf miners, Maianthemum, communal

Moved
Moved from Flies.

But, um, what about page 531?
I'm betting this is Parallelomma vittatum, but I hope you can rear to confirm. The larvae will need soil to burrow into.

 
Family/order mix-up
My main print reference for wildflowers has Maianthemum in the Liliaceae and so that's where I thought it belonged taxonomically. I checked the Liliaceae section in your book, and not seeing anything about Maianthemum there (or on BG), I figured this miner wasn't previously known. Wrong! I didn't realize Maianthemum was no longer in the Liliaceae (or even in the Liliales!)...
Thanks for pointing out my error and for the rearing suggestion. Got some soil in there, fingers crossed.

 
Alas, taxonomy is ever changing...
I suggest looking for genera by opening the cover/contents file and searching using CTRL-F. That works as long as the genus name hasn't changed!

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