M. H.  Villet, Barker, N. P., et Lunt, N., « Mechanisms generating biological diversity in the genus Platypleura Amyot & Serville, 1843 (Hemiptera: Cicadidae) in southern Africa: implications of a preliminary molecular phylogeny », South African Journal of Science, vol. 100, p. 589 - 594, 2004.

B. W.  Price, Villet, M. H., et Barker, N. P., « Patterns and processes underlying evolutionary significant units in the Platypleura stridula L. species complex (Hemiptera: Cicadidae) in the Cape Floristic Region, South Africa », Molecular Ecology, vol. 16, p. 2574 - 2588, 2007.

B. W.  Price, Barker, N. P., et Villet, M. H., « A watershed study on genetic diversity: phylogenetic analysis of  the Platypleura plumosa (Hemiptera: Cicadidae) complex reveals catchment-specific lineages », Molecular Phylogenetics and Evolution, vol. 54, p. 617 - 626, 2010.

B. W.  Price, Villet, M. H., Walton, S. M., et Barker, N. P., « Using molecules and morphology to infer the phylogenetic relationships and evolutionary history of the Dirini (Nymphalidae: Satyrinae), a tribe of butterflies endemic to Southern Africa », Systematic Entomology, vol. 36, p. 300 - 316, 2011.