Mating trials of Phytomyza glabricola on its host plants, Ilex coriacea and I. glabra.

Trials were conducted in chambers containing either I. coriacea alone, I. glabra alone, or in the presence of both host plants. Trials were considered successful if the flies mated, the female oviposited eggs, and the offspring successfully emerged as adults.*Offspring emerged from I. coriacea in two of the trials and from I. glabra in three of the trials.