Family Dictyopharidae

Subfamily Orgeriinae Fieber, 1872

Tribe Orgeriini Fieber, 1872

Genus Timonidia Ball & Hartzell, 1922

Type species (in original combination):  Timonidia solitaria Ball & Hartzell, 1922.

Synonyms: None.

Distribution: Southeastern US.

Recognized species

There are 2 species currently in the genus:

Timonidia nodosa (Ball, 1937) - USA: AZ
      = Aridia nodosa Ball, 1937: 176.
      = Timonidia nodosa (Ball, 1937); comb. by Emeljanov 2006: 76.
Timonidia solitaria Ball & Hartzell, 1922 - USA: CA

Economic Importance:

Limited.

Known host plants: 

Timonidia solitaria - Eriogonum fasciculatum Benth. (Eastern Mojave buckwheat, Polygonaceae)

Hosts from Ball & Hartzell (1922); plant names from USDA PLANTS or Tropicos.

Recognition:

Brachypterous, leaving several terga visible from above, tegulae hidden (all Orgeriinae); no callosity behind eye; head rounded or angulate, produced in front of eyes for distance less than 2/3 width of eyes. Vertex longer, apical cell of vertex (areolet) present, but poorly defined, oval, enclosed by swollen carinae; front without horizontal black band above frontoclypeal suture; tibiae not foliaceous.

Keys to genus of US Orgeriinae in Doering & Darby 1943 and Doering (1955). Timonidia nodosa moved from Aridia by Emeljanov 2006.

Timonidia solitaria (All photos by Rick Donovall or Kimberley Shropshire, Department of Entomology, University of Delaware)

Timonidia is not present on Bugguide.

Collecting

Found by inspecting hosts.

Molecular resources: As of this writing, data for this genus is not available on Genbank or on Barcode of life.

Selected references:

Ball, E. D. 1909. Some remarkable new leaf-hoppers of the family Fulgoridae. Proceedings of the Biological Society of Washington 22: 197-204.

Ball, E. D. 1937. Some new Fulgoridae from Western United States. Bulletin of the Brooklyn Entomological Society 32: 171-183.

Ball, E. D. and Hartzell, A. 1922. A review of the desert leafhoppers of the Orgerini [sic] (Rhynchota Fulgoridae). Annals of the Entomological Society of America 15: 137-152.

Doering, K. C. 1955. Some taxonomic and morphological studies of two genera of North American Dictyopharidae. University of Kansas Science Bulletin 37(7): 195-221.

Doering, K. C. and H. H. Darby. 1943. A contribution to the taxonomy of the genus Orgerius in America, north of Mexico (Fulgoridae, Homoptera). Journal of the Kansas Entomological Society 16(2-3): 64-98.

Emeljanov, A. F. 1983. Dictyopharidae from the Cretaceous deposits on the Taymyr Peninsula (Insecta, Homoptera). Paleontologicheskii Zhurnal 3: 79-85 [In Russian; translated in: Paleontological Journal 17(3): 77-82].

Emeljanov, A. F. 2006. Taxonomic changes in American Ogeriinae (Homoptera; Dictyopharidae). Zoosystematica Rossica 15:73-76.

Metcalf, Z. P. 1946. General Catalogue of the Homoptera. Fascicle IV Fulgoroidea. Part 8 Dictyopharidae. Smith College, Northhampton, Massachusetts.

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.