809897.fig.003a
809897.fig.003b
Figure 3: Mean (±SE) of relative host preference expressed by individual (A) males and (B) females in the interpopulation (Q. geminata × Q. virginiana) mating trials as a function of copulation success. The greater observed host preference of males in those mating trials that did not result in a copulation further support the role of habitat isolation as an important premating reproductive barrier among gall wasp populations.