Procecidochares kristineae and P. lisae are strictly monophagous tephritid flies forming axillary bud galls on the branches of the native, shrubby, xerophytic ragweeds Ambrosia dumosa (Gray) Payne and A. eriocentra (Gray) Payne (Asteraceae), respectively. [see this paper for much more information]
”- Richard D. Goeden and Jeffrey A. Teerink: (1997) Notes on life histories and descriptions of adults and immature stages of Procecidochares kristineae and P. lisae new species (Diptera: Tephritidae) on Ambrosia spp. in southern California©