Abstract
The South African grass-feeding leafhopper Vilargus Theron is revised. Vilargus pumilicans (Naudé) is redescribed and the specific status of V. campanus (Naudé) is discussed. Seven new species of Vilargus are described: V. bicornicans sp. n., V. budenticans sp. n., V. dentulicans sp. n., V. lobulicans sp. n., V. simulans sp. n., V. triquetricans sp. n. and V. trunculicans sp. n. A key is provided to males and known females of Vilargus. The species of this genus are small, light brown leafhoppers, commonly associated with grass in the Grassland Biome of South Africa, and rarely from the Savanna and Fynbos Biomes.References
Blocker, H.D. & Triplehorn, B.W. (1985) External Morphology of Leafhoppers. Chapter 3 In: Nault, L.R. & Rodriguez, J.G. (Eds.), The Leafhoppers and Planthoppers. John Wiley and sons, New York, USA, pp. 41–60.
Evenhuis, N.L. (2009) The insect and spider collections of the world website. Available at: http://hbs.bishopmuseum.org/codens/ (accessed: 2.viii.2010).
Hamer, M. & Slotow, R. (2008) An assessment and ecological interpretation of the terrestrial invertebrate fauna of the South African portion of the Maloti-Drakensberg bioregion Unpublished report. Inland Invertebrate Initiative, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209, KwaZulu-Natal, South Africa, 151pp.
Naudé, T.J. (1926) Cicadellidae of South Africa. A Taxonomic and Faunistic Study. Entomology Memoirs, Memoir No. 4, 1–105.
Naudé, T.J. (1929) A Taxonomic and Faunistic Study of South African leafhoppers of the family Cicadellidae. Abstract, Doctor’s Dissertation, Ohio State University, 1923, 1–22.
Stiller, M. (1998) The African leafhopper genus Nicolaus Lindberg (Homoptera, Cicadellidae, Paralimnini). African Entomology, 6(2), 325–364.
Stiller, M. (2009a) Revision of Elginus Theron (Hemiptera: Cicadellidae: Deltocephalinae) with the description of two new genera and comments on the grassland leafhopper fauna in South Africa. Zootaxa, 2135, 1–56.
Stiller, M. (2009b) A revision of the South African leafhopper genus Drakensbergena Linnavuori (Hemiptera: Cicadellidae: Drakensbergeninae). Zootaxa, 2132, 1–39.
Stiller, M. (2010) Revision of the Southern African leafhopper genus Pravistylus (Hemiptera, Cicadellidae, Deltocephalinae). Zootaxa, 2468, 1–81.
Theron, J.G. (1975) The Naudé species of South African Cicadellidae (Hemiptera). IV. Species assigned to the genera Aconura Lethierry and Deltocephalus Burmeister. Journal of the Entomological Society of Southern Africa, 38(2), 189–206.
Webb, M.D. & Heller, F.R. (1990) The leafhopper genus Pseupalus in the Old World Tropics, with a check-list of the Afrotropical and Oriental Paralimnini (Homoptera: Cicadellidae: Deltocephalinae). Stuttgarter Beiträge zur Naturkunde Serie A, 452, 1–10.
Webb, M.D. & Viraktamath, C.A. (2009) Annotated check-list, generic key and new species of Old World Deltocephalini leafhoppers with nomenclatorial changes in the Deltocephalus group and other Deltocephalinae (Hemiptera, Auchenorrhyncha, Cicadellidae). Zootaxa, 2163, 1–64.
Zahniser, J.N. & Dietrich, C.H. (2008) Phylogeny of the leafhopper subfamily Deltocephalinae (Insecta: Auchenorrhyncha: Cicadellidae) and related subfamilies based on morphology. Systematics and Biodiversity, 6(1), 1–24.