“
- [on Baccharis]: black, 3-4 mm diam.
- [on Gutierrezia]: on stems, black; cylindrical, continuous around stem; about 2-3 times diameter of stem, 5-9 mm long. One larva/gall.
- [on Gymnosperma]: on stems as for Gutierrezia. On leaves, they are elliptical; black; 3-5 mm diam.
- [on Isocoma [Medranoa]]: on stems as for G. microcephala but smaller, 5-6 mm long.
...
[He lists the following host records for this species, verified by both host and insect identification: Gutierrezia microcephala, Gutierrezia sarothrae, Gymnosperma glutinosum, Isocoma palmeri [Medranoa palmeri].]
...
[Additionally, he lists the following as possible Asteromyia hosts based on observations of galls only (no insect material available):]
Following are species on which I have collected galls, presumably of Asteromyia, but from which no larvae, pupae, or adults were available for study....
...
Baccharis halimifolia L.—Md., Fla.
B. bigelovii Gray—Ariz.
B. douglasii DC.—Calif.
”- Raymond J. Gagné: (1968) A Taxonomic Revision of the Genus Asteromyia (Diptera: Cecidomyiidae)©