Euaresta

{{short description|Genus of flies}}

{{Automatic taxobox

| image = Euaresta aequalis.jpg

| image_caption = Euaresta aequalis

| taxon = Euaresta

| authority = Loew, 1873{{cite journal |last1=Loew |first1=Hermann |title=Monographs of the Diptera of North America. Part III. |journal=Smithsonian Miscellaneous Collections |date=1873 |volume=11 |pages=vii + 351 +XIII pp., 4 pls |url=https://www.biodiversitylibrary.org/item/90071#page/6/mode/1up |access-date=26 January 2021}}

| type_species = Trypeta festiva

| type_species_authority = Loew, 1872{{cite journal |last1=Loew |first1=Hermann |title=Monographs of the Diptera of North America. Part III. |journal=Smithsonian Miscellaneous Collections |date=1873 |volume=11 |pages=vii + 351 +XIII pp., 4 pls |url=https://www.biodiversitylibrary.org/item/90071#page/6/mode/1up |access-date=26 January 2021}}

| display_parents = 3

| synonyms = *Camaromyia Hendel, 1914{{cite journal |last1=Hendel |first1=Friedrich |title=Die Gattungen der Bohrfliegen. (Analytische Ubersicht aller bisher bekannten Gattungen der Tephritinae.) |journal=Wiener Entomologische Zeitung |date=1914 |volume=33 |pages=73–98 |url=https://www.biodiversitylibrary.org/page/11530617#page/97/mode/1up |access-date=8 February 2021}}

• Setigeresta Benjamin, 1934{{cite journal |last1=Benjamin |first1=F.H. |title=Descriptions of some native trypetid flies with notes on their habits |journal=Technical Bulletin, United States Department of Agriculture |date=1934 |volume=401 |pages=1–95}}

}}

Euaresta is a genus of flies in the family Tephritidae that live in plants of the closely related genera Ambrosia, Xanthium, and Dicoria, and feed on their flowers and seeds.{{cite web |title=Euaresta Loew (Diptera: Tephritidae) |author=Allen L. Norrbom |url=http://www.sel.barc.usda.gov/diptera/tephriti/Euaresta/Euaresta.htm |publisher=Agricultural Research Service |work=The Diptera Site |date=January 26, 2001 |access-date=July 31, 2010 |archive-url=https://web.archive.org/web/20100709050929/http://www.sel.barc.usda.gov/diptera/tephriti/Euaresta/Euaresta.htm |archive-date=July 9, 2010 |url-status=dead }}{{cite journal |last1=Norrbom |first1=A.L. |last2=Carroll |first2=L.E. |last3=Thompson |first3=F.C. |last4=White |first4=I.M |last5=Freidberg |first5=A. |title=Systematic Database of Names. Pp. 65-252. In Thompson, F. C. (ed.), Fruit Fly Expert Identification System and Systematic Information Database. |journal=Myia |date=1999 |volume=9 |pages=vii + 524}}{{cite book |last1=Foote |first1=Richard H. |last2=Blanc |first2=P.L. |last3=Norrbom |first3=Allen L. |title=Handbook of the Fruit Flies (Diptera: Tephritidae) of America North of Mexico |date=1993 |publisher=Cornell University Press (Comstock Publishing) |location=New York |isbn=9780801426230 |pages=xii, 571}}

The 15 species of Euaresta are endemic to the Americas, eight being native to North America and seven to South America. Only one specimen has been collected in Central America (E. toba in El Salvador), and one or two species occur in the Antilles.

Euaresta bullans has been introduced, perhaps accidentally, from South America to California and Arizona, southern Europe, the Middle East, South Africa and Australia, where it attacks spiny cocklebur (Xanthium spinosum). E. aequalis has been introduced to Fiji and Australia, to act as a biological control agent of common cocklebur (Xanthium strumarium). E. bella was released in Europe to control ragweed (Ambrosia artemisiifolia), but did not become established there.