Genus Caenodelphax Fennah, 1965
Genus Caenodelphax Fennah, 1965: 96
Distribution: Two species are known from the United States and Canada, and two are known from the Neotropics.
Type species (in original combination): Caenodelphax teapae Fennah, 1965
There are four recognized species in this genus:
Caenodelphax atridorsum (Beamer, 1947) - USA: Oregon
= Delphacodes atridorsum Beamer 1947: 63.
= Caenodelphax atridorsum (Beamer 1947), combination by Hamilton, 2002: 17.
Caenodelphax nigriscutellata (Beamer, 1947) - USA: Colorado, Iowa, Kansas, Missouri, Canada: Alberta, Manitoba, Ontario
= Delphacodes nigriscutellata Beamer 1947: 62.
= Caenodelphax nigriscutellata (Beamer 1947), combination by Bouchard et al. 2002: 49.
Caenodelphax philyra (Fennah, 1959) - St. Lucia
= Delphacodes philyra Fennah, 1959: 262.
= Caenodelphax philyra (Fennah); combination by Fennah, 1965: 96.
Caenodelphax teapae (Fowler, 1905) - USA: Florida, Texas; Caribbean (Antigua, Barbados, Cuba, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Montserrat, Puerto Rico, St. Croix, St. Lucia, St. Thomas, St. Vincent, Trinidad and Tobago); Argentina, Bahamas, Belize, Bolivia, Brazil, Costa Rica, Colombia, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico (Colima, Guerrero, Jalisco, Oaxaca, Puebla, San Luis Potosí, Tabasco, Veracruz), Panama, Peru, Venezuela; Galápagos Islands
= Liburnia teapae Fowler, 1905: 135.
= Megamelus teapae (Fowler); combination by Crawford, 1914: 618.
= Delphacodes teapae (Fowler); combination by Wolcott, 1923: 274.
= Caenodelphax teapae (Fowler); combination by Fennah, 1965: 96.
Caenodelphax teapae reported from:
Urochloa plantaginea (Link) R. Webster (plantain signalgrass)
Cynodon dactylon (L.) Pers. (Bermudagrass)
Paspalum notatum Flueggé (bahiagrass)
Phaseolus vulgaris L.(kidney bean)
Host data from Wilson (2005) and specimen label data (NMNH). Plant names from USDA Plants Database.
Economic Importance: Caenodelphax teapae is a widespread pest in the Neotropics; transmits Urochloa hoja blanca virus (UHBV) in plantain signalgrass.
This genus is being revised and their should be an update shortly (expected early March 2014).
This genus was redefined by Hamilton (2002). Key diagnostic features of Caenodelphax include a narrow crown, black dorsum, and small, knife-shaped calcar. The calcar is similar to that of Delphacodes campestris (Van Duzee), Eurybregma, and Kosswigianella; these genera, however, are characterized by having wide heads, whereas species with a similarly narrow crown typically have large, foliaceous calcars. Caenodelphax species typically have pale, contrasting antennae and a dark frons, although variation in color can be seen. Some sexually dimorphic coloration is observed in Nearctic species, with females appearing pale tan; in these individuals, the antennae are not contrasting with the frons.
Caenodelphax teapae male macropter
Caenodelphax teapae male brachypter
Caenodelphax teapae female macropter
Caenodelphax teapae female brachypter
Gernot Kunz Kunzweb Gallery Costa Rica (I've provided the link, but Caenodelphax is not there surprisingly)
Leafhopper, Planthopper & Psyllid Vectors of Plant Disease (C. teapae)
3I Interactive Keys and Taxonomic Databases (Dmitry Dmitriev)
Beamer, R. H. 1947. Some new species of Delphacodes (continued) with two old ones (Homoptera: Fulgoridae). Journal of the Kansas Entomological Society 20(2): 58-71.
Bouchard, P., K.G.A. Hamilton and T. A. Wheeler. 2002. Diversity and conservation status of prairie endemic Auchenorrhyncha (Homoptera) in alvars of the Great Lakes region. Proceedings of the Entomological Society of Ontario 132: 39-56.
Caldwell, J. S. and L. F. Martorell. 1951 [dated1950]. Review of the Auchenorynchous [sic] Homoptera of Puerto Rico. Part II. The Fulgoroidea except Kinnaridae. Journal of Agriculture of the University of Puerto Rico 34(2): 133-269.
Crawford, D. 1914. A contribution toward a monograph of the homopterous insects of the family Delphacidae of North and South America. Proceedings of the United States National Museum 46: 557-640.
Fennah, R. G. 1959. Delphacidae from the Lesser Antilles (Homoptera: Fulgoroidea). Bulletin of the British Museum (Natural History), Entomology 8: 245-265.
Fennah, R. G. 1965. New Species of Fulgoroidea (Homoptera) from the West Indies. Transactions of the Royal Entomological Society, London 117(4): 95-126.
Fennah, R. G. 1967. Fulgoroidea from the Galapagos Archipelago. Proceedings of the California Academy of Sciences 35(4): 53-102.
Fowler, W. W. 1904. Order Rhyncota. Suborder Hemiptera-Homoptera. (Continued). Biologia Centrali-Americana; or, Contributions to the knowledge of the fauna and flora of Mexico and Central America 1: 77-124. (here)
Hamilton, K. G. A. 2002. Homoptera (Insecta) in Pacific Northwest grasslands. Part 1- New and revised taxa of leafhoppers and planthoppers (Cicadellidae and Delphacidae). Journal of the Entomological Society of British Columbia 99: 3-31.
Wilson, S. W. 2005. Keys to the families of Fulgoromorpha with emphasis on planthoppers of potential economic importance in the southeastern United States (Hemiptera: Auchenorrhyncha). Florida Entomologist 88(4): 464-481.
Wolcott, G. N. 1923. Insectae Portoicensis. A preliminary annotated check-list of the insects of Porto Rico, with descriptions of some new species. Journal of the Department of Agriculture Porto Rico 7: 1-313.