The percentage of nematodes belonging to parental and hybrid classes based on analysis of 8 microsatellite loci with NewHybrids. Number of nematodes sampled above bar. Nematodes were found within the woodwasp hemocoel, except those within eggs, as labelled below the bar (number of eggs sampled in parentheses). Yellow highlight shows samples from which both hemocoel and egg(s) were sampled from the same female.