Figure 1.

Females of asexual species are characterized by reduced sexual attractiveness to males of closely related sexual species, whereby this reduction is not solely explained by genetic divergence between species. Indicated is the proportion of copulations of sexual males with females of their own species (light grey bars), their asexual sister species (dark grey bars) and related sexual species (white bars). Female species are ordered according to increasing nuclear genetic divergence from focal males, with intraspecific matings first and matings with females from the most distantly related species last. bart, T. bartmani; boh, T. boharti; cali, T. californicum; chum, T. chumash; cris, T. cristinae; gen, T. genevievae; knu, T. knulli; pet, T. petita; pod, T. podura; popp, T. poppensis; shep, T. shepardi; tah, T. tahoe.