A number of American Liliaceae have simple leaf spot galls about 8 mm in diameter made by unidentified cecidomyiids for which the adult stage has not been reared. Each spot contains a single larva that leaves the gall when full-grown. At that time the spot becomes translucent and more noticeable...
[Lists Maianthemum canadense, Polygonatum biflorum, Smilacina racemosa [Maianthemum racemosum], and Uvularia sessilifolia as hosts for this gall.]
”- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©