Viraktamath, C. A. “A Revision of the Varta-Stymphalus Generic Complex of the Leafhopper Tribe Scaphytopiini (Hemiptera: Cicadellidae) from the Old World”. Zootaxa, vol. 713, no. 1, Nov. 2004, pp. 1–47, doi:10.11646/zootaxa.713.1.1.