Family Acanaloniidae

Subfamily Acanaloniinae

Tribe Acanaloniini

Genus Euthiscia Van Duzee, 1923

Type species: Euthiscia signata Van Duzee, 1923.

Synonyms: none.

Note: Gnezdilov (2012) has recently subsumed Euthiscia under Philantis Stal, 1862.  This site will soon be altered to reflect that nomenclatural change.

Distribution: Southern California and Arizona; Mexico (Baja California, Baja California Sur, Gulf of California)

Recognized species

There are 2 species in this genus as follows:

Euthiscia signata Van Duzee, 1923 - Mexico: Espiritu Santo Island, Gulf of California.
Euthiscia tuberculata Van Duzee, 1923 - USA: AZ, CA; Mexico (Baja California, Baja California Sur, Isla Monserrate)

Note: Euthiscia crockeri Van Duzee, 1937 (Galapagos - Santa Cruz (Indefatigable) Island) was transferred to Philatis Stål, 1862 by Fennah 1967: 85); .

Economic Importance: Limited; species are uncommonly encountered.

Known host plants: 

Aloysia wrightii (A. Gray) A. Heller (as Lippia wrightii A. Gray; Wright's beebrush, Verbenaceae).

Hosts from Ball 1935; Wilson et al. (1994); plant names from USDA PLANTS or Tropicos.

Recognition:

Similar to Issidae, with no spines on hind tibiae (unlike Issidae), brown in color.

Euthiscia tuberculata (Photos by Kimberley Shropshire, University of Delaware)

Molecular resources: GenBank and Barcode of Life have no data for this genus. 

Selected references:

Ball, E. D. 1935a. Some new Issidae with notes on others (Homoptera: Fulgoridae). Bulletin of the Brooklyn Entomological Society 30: 37-41.

Fennah, R. G. 1967. Fulgoridae of the Galápagos Archipelago. Proceedings of the California Academy of Science, fourth series 35(4): 53-102.

Gnezdilov, V. M. 2012. On the composition and distribution of the family Acanaloniidae Amyot et Serville (Homoptera, Fulgoroidea). Entomologicheskoe obozrenie 91(3): 157–161. [In Russian]

Van Duzee, E. P. 1923. Expedition of the California Academy of Sciences to the Gulf of California in 1921 - The Hemiptera (True Bugs, etc.). Proceedings of the California Academy of Sciences (Ser. 4) 12: 123-200.

Van Duzee, E. P. 1937. The Hemiptera of the Templeton Crocker Expedition to Polynesia in 1934-1935. Proceedings of the California Academy of Sciences. San Francisco (Ser. 4) 22: 111-126.

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.