Additional Notes on Carolella willettana, Comst.
This Phaloniid moth was first described by the writer as a subspecies of Carolella busckana Comst., from material taken at Chuckawalla Springs, Riverside Co., Calif., by George Willett. At that time, nothing was known of the early stages, but we have since observed these, and on the basis of the very distinctive gall, and different foodplant, now consider it a distinct species.
Comstock, John A.
"Additional Notes on Carolella willettana, Comst.,"
Bulletin of the Southern California Academy of Sciences:
Available at: https://scholar.oxy.edu/scas/vol39/iss3/10