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, Warchalowska-Sliwa E, Hemp A. The genus Aerotegmina (Orthoptera, Tettigoniidae, Hexacentrinae): chromosomes, morphological relations, phylogeographical patterns and description of a new species. Organisms Diversity & Evolution. 2013;13(4):521 - 530. Available at: http://link.springer.com/10.1007/s13127-013-0133-7.