Aggregate bud galls that resemble those of A. monacha on S. juncea and S. erecta are known from several other goldenrod species, including S. patula, S. odora, and an undetermined Solidago species from Florida, based on material in the National Museum of Natural History, Washington, D.C.

[please refer to this paper for many more details of gall biology, insect life history, anatomy, and phylogeny]

[cataloged here]

Summer galls occur only on Solidago patula (Asteraceae) at the apex of the main stem. Galls typically occur in tight clusters but also as singlets. Adults emerge from these galls in August and females deposit their eggs in living meristematic tissue at the base of the host plant where they overwinter. The spring crown gall forms at this location.

[Records for larvae, adults identified as Asphondylia cf. monacha, with a photo of a bud gall on S. patula from Massachusetts.]