Genus Dictyonia Uhler, 1889
Subfamily Tambiniinae Kirkaldy, 1907
Gaetuliini Fennah, 1978 (sensu Gnezdilov 2007)
(Note: Historically part of Issidae [e.g., Fennah 1954]; subsequently transferred to Nogodinidae [Fennah 1984], then to Tropiduchidae [Gnezdilov 2007]).
Genus Dictyonia Uhler, 1889
Type species (in original combination): Dictyonia obscura Uhler, 1889.
Distribution: Western USA (California, Washington)
There is a single species recognized in the genus:
Dictyonia obscura Uhler, 1889 - USA: CA, WA
= Dictyonia pyschodimorpha Bliven, 1966: 103; syn. by O’Brien 1988a: 868.
Known host plants:
Dictyonia can be recognized among the Gaetuliini by the forewings covering the abdomen (vs. Danepteryx or Osbornia); wing nearly as wide as long and semicircular in shape, costal margin decidedly rounding; forewings tegmina partly opaque, usually with an oblique hyaline band across clavus and corium; forewings almost as broad as long (vs. semicircular in Dictyssa) , held almost vertically, cells of corium exceptionally few and large and distinctly angular.
Dictyonia obscura (All photos by Kimberley Shropshire, Department of Entomology, University of Delaware)
Dictyonia is collected by inspecting likely host plants or sweeping.
Bliven, B. P. 1966. New genera and species of Issidae. Occidental Entomologist 1: 103-107.
Doering, K. C. 1939. A contribution to the taxonomy of the subfamily Issinae in America north of Mexico (Fulgoridae, Homoptera). Part III. University of Kansas Science Bulletin 26: 83 167.
Fennah, R. G. 1954. The Higher classification of the family Issidae (Homoptera: Fulgoroidea) with descriptions of new species. Transactions of the Royal Entomological Society of London 105(19): 455-474.
Fennah, R. G. 1984. Revisionary notes on the classification of the Nogodinidae (Hemiptera: Fulgoroidea), with descriptions of a new genus and a new species. Entomologist's Monthly Magazine 120: 81-86.
Gnezdilov, V. M. 2007. On the systematic positions of the Bladinini Kirkaldy, Tonginae Kirkaldy, and Trienopinae Fennah (Homoptera, Fulgoroidea). Zoosystematica Rossica 15: 293-297.
Kirkaldy, G. W. 1907. Leafhoppers supplement (Hemiptera). Bulletin of the Experiment Station of the Hawaiian Sugar Planters’ Association, Entomological Series 3:1-186, plus 20 plates.
Kirkaldy, G. W. 1908. A brief note on three (two new) California Fulgoroid Hemiptera. Proceedings of the Hawaiian Entomological Society 2: 22-23.
Melichar, L. 1906. Monographie der Issiden. (Homoptera). Abhandlungen der K. K. Zoologisch-botanischen Gesellschaft in Wien 3: 1-327.
Metcalf, Z. P. 1958. General catalogue of the Homoptera. Fasc. IV. Fulgoroidea, Part 15. Issidae. North Carolina State University, Raleigh, NC. 561 pp.
O’Brien, L. B. 1988. Taxonomic changes in North American Issidae (Homoptera: Fulgoroidea). Annals of the Entomological Society of America 81: 865-869.
Uhler, P. R. 1889. New genera and species of American Homoptera. Transactions of the Maryland Academy of Sciences 1: 33-44.
Van Duzee, E. P. 1914a. A preliminary list of Hemiptera of San Diego County, California. Transactions of the San Diego Society of Natural History 2: 1-57.
Wilson, S. W., C. Mitter, R. F. Denno, and M. R. Wilson. 1994. Evolutionary patterns of host plant use by delphacid planthoppers and their relatives. In: R. F. Denno and T. J. Perfect, (eds.). Planthoppers: Their Ecology and Management. Chapman and Hall, New York. Pp. 7-45 & Appendix.