Hemp C, Voje KLysne, Heller K-G, Warcha?owska-?liwa E, Hemp A. A new genus of African Acrometopini (Tettigoniidae: Phaneropterinae) based on morphology, chromosomes, acoustics, distribution, and molecular data, and the description of a new species. Zoological Journal of the Linnean Society. 2010;158(1):66 - 82. Available at: http://blackwell-synergy.com/doi/abs/10.1111/zoj.2010.158.issue-1https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2009.00542.x.

Hemp C, Heller K-G, Warcha?owska-?liwa E, Grzywacz B, Hemp A. Review of the Plangia graminea (Serville) complex and the description of new Plangia species from East Africa (Orthoptera: Phaneropteridae, Phaneropterinae) with data on habitat, bioacoustics, and chromosomes. Organisms Diversity & Evolution. 2015;15(3):471 - 488. Available at: http://link.springer.com/10.1007/s13127-015-0216-8.

Hemp C, Heller K-G, Warcha?owska-?liwa E, Grzywacz B, Hemp A. Biogeography, ecology, acoustics and chromosomes of East African Eurycorypha Stål species (Orthoptera, Phaneropterinae) with the description of new species. Organisms Diversity & Evolution. 2013;13(3):373 - 395. Available at: http://link.springer.com/10.1007/s13127-012-0123-1.