Galls at bases of aerial shoots and young rhizomal branches (likely on buds on these tissues); both monothalamous and polythalamous; individual galls more or less globular; creamy white, sometimes with violet colored areas.

- M.A.S.K. Ranasinghe: (1977) Bionomics of a subterranean gall midge (Diptera: Cecidomyiidae) from Artemisia ludoviciana^©

Reference: https://www.biodiversitylibrary.org/page/8889187