This species induces very small, single-chambered galls in apical shoot tips ... The gall is composed of several very short leaves that are pressed together to form a conical chamber, the internal walls of which are lined by a white layer of mycelium.

[this species was originally described by the authors of this paper; please refer to it for many more details of gall biology, insect life history, anatomy, and phylogeny]

- Netta Dorchin, Jeffrey B. Joy, Lukas K. Hilke, Michael J. Wise, Warren G. Abrahamson: (2015) Taxonomy and phylogeny of the Asphondylia species (Diptera: Cecidomyiidae) of North American goldenrods: challenging morphology, complex host associations, and cryptic speciation^©